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Four university students collaborating around a laptop in a busy cafe

Love School of Business · AI Hackathon

Friday is coming.
Your café needs one plan.

A campus festival. An influencer offer. A missing manager. A late coffee shipment. Connect four roles, guide AI, and make the call.

Start the challenge

Thursday afternoon changes everything.

It is four o'clock on Thursday afternoon. You and three teammates run a small campus café: one espresso machine, a short menu of medium drinks, and student servers on morning or afternoon shifts. Most Fridays are predictable. Tomorrow will not be. In the last hour, four things landed at once.

  • A campus festival opens tomorrow beside the café. Crowds will build around lunch and again in the late afternoon.
  • A student influencer with a large local following will post about the café tonight if you give them an offer to promote. They need an answer soon.
  • Ana, the manager scheduled to run the day, is sick. Malik, the other manager, can cover part of the day but not all of it.
  • Your regular coffee delivery, due Friday morning, may be late. You have tonight's shelf stock plus an emergency supplier who costs more.

Each on its own is manageable. Together they pull against each other. More customers are only good if you can serve them. A promotion is only good if it makes money after the discount. Extra hours need someone qualified to lead them. All of it depends on having enough coffee.

By the end of this session, your team hands in one Friday plan that answers eight connected questions. AI can calculate, compare, and challenge. It cannot know the facts your teammates hold, and the decision remains the team's responsibility.

Your goal Attract customers, protect employees, deliver reliable service, and produce a financially responsible result.

The café and its people

The numbers behind every item below live in the four role notebooks. Your teammates hold them.

The café

One campus location, open all day Friday. One espresso machine sets the pace. Every Friday drink is a medium in the café's own logo cups. Setup runs before opening and cleanup after closing.

Tonight's coffee and cup count is done. An emergency supplier can deliver Friday morning at a higher price. The café keeps a cash reserve that is not available for Friday spending.

The people

  • Ana, manager. Scheduled for Friday. Sick.
  • Malik, manager. Available for the first part of the day only. Whoever leads after him must be named and have authority.
  • Priya, experienced server. Qualified as a paid acting lead. Available in the afternoon.
  • Servers, student employees. More in the morning than the afternoon. Long shifts earn a break, and someone must cover the station meanwhile.

The festival

Opens tomorrow beside the café. Two crowd surges are expected, one around lunch and one in the late afternoon. Between them the café is busy but manageable.

The offer options

The influencer promotes whichever offer you choose. The owner has approved two: a small discount on one medium drink, or a two-for-one. Anything published must state how many customers can redeem it.

Build your team

Introduce yourselves, choose one role per person, and enter each member full name below. Your team number stays with you through the entire challenge.

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Choose your role. Bring evidence to the team.

Each role holds current Friday facts that the other roles do not have. Open your assigned workspace, identify the evidence that affects each business decision, and share it before the group decides.

01

Finance

You decide whether the Friday plan makes money and how much the café can afford to risk. The other roles suggest ways to spend. You say what it costs, what it earns, and where the line is.

Lead: Tasks 4 and 8
Evidence mission

Your notebook has the menu price, both promotion options, normal and emergency supply costs, worker pay, the acting lead's extra pay, and the savings that must stay untouched. Before Task 1, bring those numbers and a rough cost for one cup. You lead Tasks 4 and 8. In every other task, your line is "That would cost."

Open Finance NotebookLM
02

Marketing

You own the customer side: how many people will come, what offer brings them in, and what the café promises in public. Make the offer appealing and realistic, because customers will hold the café to whatever gets posted.

Lead: Tasks 1 and 6
Evidence mission

Your notebook has a normal Friday's customer count, how many people the influencer reaches and how many are likely to respond, the festival's busiest times, and the owner's rules for any public offer. Before Task 1, bring a low, middle, and high guess of how many customers will come. You lead Tasks 1 and 6. In every other task, you speak for the customer.

Open Marketing NotebookLM
03

Operations

You know what the café can physically do. The machine has a limit, and coffee and cups run out. Turn every big idea into one question: can we make that many drinks, with what we have, in the hours we are open?

Lead: Tasks 2 and 5
Evidence mission

Your notebook has the machine's hourly limit, the day's hours from setup to cleanup, how much coffee one cup uses, tonight's inventory, and the emergency delivery option. Before Task 1, bring the most cups the café can make in a day and the coffee one cup uses. You lead Tasks 2 and 5. In every other task, your line is "The machine can only."

Open Operations NotebookLM
04

Human Resources

You look after the people who work Friday. With Ana out, someone must be in charge every hour, every station must be covered, and everyone gets a break. A plan that wears out the staff or leaves nobody in charge fails, no matter how good the numbers look.

Lead: Tasks 3 and 7
Evidence mission

Your notebook has who is available and when, who can lead, how many workers are on each shift, the fewest workers needed for normal hours and festival rushes, and the break rules. Before Task 1, bring the hour when leadership changes hands and how many workers are on the floor at each rush. You lead Tasks 3 and 7. In every other task, your line is "We only have people to."

Open Human Resources NotebookLM

Make eight business decisions

The lead role starts each task. Every role contributes. All four members approve the response.

0 of 8 responses ready

Every task runs the same way

  1. The lead role opens. Reads the situation aloud, restates the question, and shares what their notebook says.
  2. The other three roles add their facts. Each names one fact or constraint from their own notebook. Do not wait to be asked.
  3. The team argues the tradeoff. Out loud, before touching AI. What does each role want, and where do those wants collide?
  4. The team puts the problem to AI. Give it your facts, state your assumptions, and ask it to show its work.
  5. The team checks the answer. Did AI use your facts or invent its own? Are the calculations right? Fix what is wrong.
  6. All four approve. Each person can explain the answer and would defend it. If one role cannot, the task is not finished.

Save as you go with each task's Save button. Nothing is submitted until the end. Task 8 needs the most checking, so leave time for it.

01 Lead: MarketingEvaluate the opportunity

Situation

A student influencer just messaged the café: "Happy to post tonight. What's the offer?" Most of their followers are students who will be at the festival. Even if only a few of them come, Friday could be the café's busiest day of the month.

But the café has one coffee machine, a manager who is out sick, and a coffee delivery that might be late. Say yes with no limits, and the café could get more customers than it can handle and lose money on the discount. Say no, and the café misses its best chance to get new customers. There is a middle path: say yes, but with rules. Pick a clear offer, limit how many people can use it, and choose a time window that avoids the busiest hours.

This choice shapes every task after it. The number of customers you expect here is the number the team will plan around for workers, prices, and coffee orders. If this number is off, the rest of the plan will be off too.

Bring four facts to the table: how many people the post can reach (Marketing), how many drinks the machine can make (Operations), who is working Friday (Human Resources), and how much the café earns on each cup after the discount (Finance). Then ask two questions. How many extra customers can the café serve well? Which offer brings in about that many?

What is at stake: More customers is not always better. If the promotion causes long lines, empty shelves, worn-out workers, or a discount that loses money, the café ends up worse off.

Should the café accept, change, or reject the influencer's promotion?

Connect the four perspectives

  • Marketing, you lead. Bring how many people the post can reach and a low and high guess of how many will come. Add a normal Friday's customers so the team sees the full total.
  • Operations, bring the most drinks the machine can make in a day, before anyone gets excited about the crowd.
  • Human Resources, bring who is working and when, and say whether the café can handle a much busier day with a manager out.
  • Finance, bring the price and both offer types, and work out roughly what the café keeps on each cup after the discount, the coffee, and the cup.
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02 Lead: OperationsForecast demand and service capacity

Situation

Friday will not be busy all day. Festival crowds come in waves: a slow morning, a big lunch rush, a quiet stretch, and another rush late in the afternoon. During a rush, more people may want coffee than the café can make.

Two things limit how many customers you can serve. The coffee machine can only make so many drinks an hour. The workers can only take orders, make drinks, and hand them out so fast, and there are fewer workers in the afternoon. The smaller of these two numbers is your real limit. Go past it, and lines get long and mistakes happen.

Take the low, base, and high customer estimates from Task 1 and think about when those people will show up. Then compare your two limits: how many drinks the machine can make and how many customers the workers can serve during a rush. The smaller number is the most customers your café should plan to serve.

That number matters for every task after this one. It tells you how many workers you need, what to charge, how much coffee to order, and how big your promotion can be.

What is at stake: The café can only serve as many customers as its weakest link allows. A fast machine does not help if there are not enough workers to run it.

How many customers might come, and how many can the café serve without long waits or worn-out workers?

Connect the four perspectives

  • Operations, you lead. Bring how many drinks the machine makes per hour and how many hours the café is open. Multiply them out loud so everyone hears the daily limit.
  • Marketing, bring the customer guesses from Task 1 and the two busiest times, and say roughly what share of the day's customers come in each rush.
  • Human Resources, bring how many workers are on in the morning and in the afternoon, and the fewest needed to get through a rush.
  • Finance, say how many customers make the day worth it. Serving the most people is not the goal if the last ones get bad service.
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03 Lead: Human ResourcesSolve the staffing disruption

Situation

Ana was supposed to run the café on Friday, but she is sick. Malik can open and lead the morning, but he has to leave before the afternoon rush, when the smaller crew faces the second crowd. From the moment he leaves until closing, someone must be in charge. That person approves refunds, pauses the offer, sends workers on break, and calls the emergency supplier if needed.

Priya is an experienced server who can step up as the afternoon lead, but she will need to be paid extra. Other choices are bringing in someone else, closing early, offering a smaller menu, or mixing a few of these. Each choice helps with some problems and creates others.

Turn the customer number from Task 2 into a real schedule with names. Who is in charge each hour? Who takes orders, who makes drinks, who hands them out? When does each person get a break, and who covers for them? What happens at the moment Malik leaves?

This schedule becomes the labor cost in Task 4 and the employee instructions in Task 7. Test it against the busiest hour: if three things go wrong at once, who decides what to do?

What is at stake: A schedule is not finished just because it has enough names. It also needs someone in charge at every moment, cover for breaks, and enough people during the rush.

How should the café run safely and smoothly with one manager out?

Connect the four perspectives

  • Human Resources, you lead. Bring who is available, who can lead, the break rules, and the fewest workers needed for normal and busy hours. Suggest how the handoff works when Malik leaves.
  • Operations, bring the full day from setup to cleanup and the jobs that must always be covered. Say what an acting lead can and cannot do while also serving customers.
  • Marketing, bring the promise from Task 1 and say which staffing options would break it.
  • Finance, bring the server pay and the extra pay for the acting lead, and put a cost on each option so the comparison is fair.
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04 Lead: FinanceEstablish the financial guardrails

Situation

The team now has an offer, a customer number, and a staffing plan. Each one costs money. The discount lowers what the café earns on every promo cup. The afternoon lead gets extra pay. Backup coffee costs more than normal. Refunds and remade drinks come out of Friday's earnings too.

The owner has one firm rule: the café's savings are off limits. A busy Friday that ends with less money than a normal day is a failure, no matter how many customers came. So set the limits now: the price, the most extra money you will spend, the least you are willing to earn, and the signal that would make the team stop.

Start with one cup. What the café charges, minus the discount, minus the cost of the coffee and the cup. What is left is what the café keeps on each cup. Multiply that by the customer numbers from Task 2, subtract the worker costs from Task 3, and you have a rough guess of Friday's result for each scenario.

Then write down the limits that Tasks 5, 6, and 7 must follow and Task 8 will check: a cap on extra spending, savings untouched, the number of customers needed to break even, and a stop rule. Write them clearly enough that a teammate could follow them without you.

What is at stake: More sales can still mean less money if the discount and rush costs grow faster than what the café keeps on each cup.

What price, spending limit, savings rule, and minimum result should guide Friday's decisions?

Connect the four perspectives

  • Finance, you lead. Bring the price, the discount options, supply costs, pay, bonus, and savings. Work out the one-cup math on paper before asking AI.
  • Marketing, bring the customer guesses and explain how the discount changes what each customer is worth. A discount for someone who would have come anyway is a cost.
  • Operations, bring normal and emergency prices for coffee and cups, and say what an emergency order adds to the day's cost.
  • Human Resources, bring the Task 3 staffing plan in hours and dollars, including the acting lead's extra pay.
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05 Lead: OperationsProtect the coffee and cup supply

Situation

Tonight's count is done. The café has some coffee and some logo cups on the shelf. The regular delivery is due Friday morning, but it may be late, and nobody knows by how much. An emergency supplier can bring coffee Friday morning at a higher price, and plain cups can be bought nearby for more than usual.

Coffee and cups are different. Cups keep, so extra cups just get used next week. Coffee does not keep, so every extra pound is wasted. But running out of either means turning away customers on the busiest day of the semester, the very people the influencer sent.

Start from the customer number in Task 2, not the raw demand, because the café will never serve more than that. Use the recipe from Operations to turn customers into pounds of coffee. Compare what Friday needs against what is on the shelf. The difference is your order.

Then set a backup rule, not a purchase: at what point Friday morning, and based on what, does the café call the emergency supplier? It should be something Malik can check during setup and act on by himself. This sets the supply cost for Task 8 and the shortage response for Task 7.

What is at stake: Coffee and cups are not the same. Extra coffee goes stale and is wasted. Extra cups just get used next week.

How much coffee and how many cups should the café get, and when should the backup plan kick in?

Connect the four perspectives

  • Operations, you lead. Bring the recipe, tonight's coffee and cup count, and the emergency option. Turn cups into pounds on paper first.
  • Marketing, bring the customer guesses and write what the café tells customers if a drink runs out.
  • Human Resources, confirm who checks the shelf at setup, who is allowed to place the emergency order, and how workers find out the backup plan is on.
  • Finance, bring normal and emergency prices for coffee and cups, and cost out the normal case, the backup case, and the waste from ordering too much.
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06 Lead: MarketingFinalize the customer offer

Situation

The influencer is waiting for the final wording. Since Task 1, the team has learned how many customers the café can serve, who is working, what the budget allows, and how much coffee there is. The offer that seemed right at the start may need to change.

Whatever the team sends will be public within the hour. Customers will show up with the post on their phones, and workers will have to apply it at the register while a line waits. The offer needs a value, a limit, a time window, and a simple answer to the question every customer will ask once the limit is reached: "So what do I get now?"

This is Task 1 again, with everything the team now knows. Check the offer against four limits: the customer number from Task 2, the staffing from Task 3, the budget from Task 4, and the supply from Task 5. If any one of them says the offer is too generous, tighten it before it goes public.

Write it the way the influencer will post it and the way a worker will explain it. If those two versions do not match, it is not ready. This wording becomes the customer script in Task 7 and the promise Task 8 approves.

What is at stake: A promotion is not ready until you know how many people can use it, who can use it, when, and what customers hear after the limit is reached.

What exactly should the café promise customers on Friday?

Connect the four perspectives

  • Marketing, you lead. Write the post the way the influencer would say it, with the discount, the drink, the limit, the hours, and any one-per-customer rule.
  • Operations, check the time window against the busy periods and the machine limit, and say whether it keeps the promo crowd out of the rush.
  • Human Resources, read the offer as a worker would. Can it be applied in five seconds at the register? What do you say when the limit is hit?
  • Finance, check the offer against the Task 4 limits and confirm the most the discount could cost fits under the spending cap.
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07 Lead: Human ResourcesBuild the employee action plan

Situation

The workers arriving Friday morning were not in this room. They do not know what the team decided or why. They need one page that answers the questions they will actually have: Where do I stand? Who do I ask? When is my break? What do I say when the line is out the door? What if the coffee runs out? What if a customer is angry?

Every decision from Tasks 1 through 6 has to become instructions a tired student can follow at two in the afternoon with twenty people in line. If two workers could read the plan and do different things in the same situation, it is not finished.

Write for a worker who has never seen the other seven tasks. Give them the shape of the day, their station, their leader, their break, and the signals that change what they do: the line-too-long rule from Task 2, the supply rule from Task 5, the offer limit from Task 6, and the spending limit from Task 4.

The pre-shift briefing at the end is the whole plan boiled down to what Malik says at setup. If it takes more than a minute to say out loud, cut it down.

What is at stake: A plan is not ready if two workers could read it and do opposite things in the same situation.

What do workers need to know and do to carry out the Friday plan?

Connect the four perspectives

  • Human Resources, you lead. Turn the Task 3 schedule into stations, names, hours, breaks, and the handoff. Write the pre-shift briefing.
  • Operations, describe how a rush works: who takes orders, who makes drinks, who hands them out, and what a too-long line looks like from behind the counter.
  • Marketing, write the two scripts workers need: what to say about the offer, and what to say to an unhappy customer.
  • Finance, set what the shift lead can spend without asking: the money set aside for remakes and refunds, and whether any overtime is allowed.
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08 Lead: Finance + all-role sign-offApprove the final Friday plan

Situation

Seven decisions are on the table. Each one was made with the best information at the time. The last job is to read them as one plan and ask whether they fit together. Does the Task 6 offer match the Task 2 customer number? Does the Task 3 staffing cover the busiest hour? Does the spending in Tasks 3, 5, and 7 stay under the Task 4 limit? Does Task 7 include every rule the earlier tasks set?

Then make the call the owner would make: go ahead, go ahead with specific changes, or drop the promotion and run a normal Friday. Dropping it is a fair choice if the plan does not hold together. Going ahead is only fair if all four roles are willing to put their names on it.

The evaluator looks for contradictions between tasks before it looks at good writing. Lay the seven answers side by side and look for numbers that disagree: an offer limit that changed between Tasks 1 and 6, a customer number that changed between Tasks 2 and 5, spending that quietly went over the Task 4 limit. Fix them here and say what you fixed.

Find the weakest guess in the plan, the one that would cause the most damage if it is wrong. Say what sign on Friday morning would tell you it is wrong and what you would do about it. Then write the final recommendation as if the owner reads only this task.

What is at stake: The final plan is only as strong as its weakest match between tasks. Nice writing does not fix numbers that disagree.

Should the café go ahead, go ahead with changes, or drop the promotion?

Connect the four perspectives

  • Finance, you lead. Put the money coming in, the costs, and the result in one place, and check every expense against the Task 4 limits.
  • Marketing, confirm the offer, the customer guesses, and the public promise are the same in Tasks 1, 2, and 6.
  • Operations, confirm the customer limit, hours, supply amounts, and trigger rules are the same in Tasks 2, 5, and 7.
  • Human Resources, confirm the staffing, the handoff, breaks, and the briefing are the same in Tasks 3 and 7, and nobody is scheduled past the rules.
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Name the café you are protecting

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Show how your team led AI

Strong teams do more than accept an answer. They add context, test assumptions, and change recommendations that do not fit.

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