If you are deciding whether to spend $2,000 on a new laptop or trying to write a courteous email that says “no” without damaging a relationship, AI can help - but only if you give it a job specific enough to do well. This week, we will use it for **researching a major purchase decision** and **writing a professional decline email**.

Try at least one before Sunday. That is the whole assignment.

Use Case 1 of 2

Use Case 1: Researching a Major Purchase Decision

At 8:15 p.m. on Tuesday, September 29, Linda Morales was sitting at her kitchen table with three browser tabs open and a fourth one loading. She needed a new car. Her twelve-year-old Honda had begun making an unsettling grinding noise, and her mechanic had warned her that the next repair might be expensive. Linda had narrowed her options to a hybrid SUV, a conventional gasoline model, and a lightly used electric vehicle. Every review seemed to recommend something different. One praised fuel economy; another warned about battery replacement costs. A third spent most of its time discussing features Linda did not care about.

What Linda really needed was not “the best car.” She needed to compare the choices against her actual life: commuting 35 miles each way, driving in winter, keeping the vehicle for at least eight years, and avoiding a payment that would make retirement planning more difficult. AI could help organize that decision - but only after Linda explained her priorities.

Here is the exact prompt to use:

Copy and paste this into ChatGPT or Claude:

> I am researching a major purchase and want help making a careful comparison, not a sales pitch. > > The purchase is: [describe the item, such as “a vehicle,” “a refrigerator,” “a new roof,” or “a laptop”]. > > My options are: > 1. [Option A] > 2. [Option B] > 3. [Option C] > > My situation is: > - My budget is approximately [amount or range]. > - I expect to use this purchase for [number] years. > - My most important priorities are [list your three to five priorities]. > - I do not care much about [features or considerations that are unimportant to you]. > - My main concerns are [list your concerns]. > > Please help me build a decision framework. First, identify the criteria that matter most for my situation. Then create a comparison table showing the likely advantages, disadvantages, ongoing costs, maintenance concerns, and situations in which each option would make sense. Separate facts that should be verified from reasonable inferences. Do not assume that the newest or most expensive option is best. > > Give me a list of specific questions to ask a salesperson, contractor, dealer, or service provider. Also tell me which claims require independent research or professional advice. If important information is missing, ask me no more than five clarifying questions before giving your recommendation. End with a cautious recommendation based on my stated priorities, including what would change that recommendation.

Why this prompt works: It gives the AI **context, criteria, constraints, and a process**. “Which one should I buy?” invites a generic answer because the system does not know what matters to you. This prompt explains your budget, time horizon, priorities, and concerns, then asks for comparisons rather than persuasion. The request to separate facts from inferences is especially useful: it encourages the AI to identify uncertainty instead of presenting every sentence with the same confidence.

Use Case 2 of 2

Use Case 2: Writing a Professional Decline Email

On Thursday morning at 9:40 a.m., David Chen opened an email from a former colleague, Marcus, asking him to join a consulting project. The work sounded interesting, and David appreciated being asked. But the timing was wrong. He had already committed to two demanding clients, was helping his wife care for her mother, and knew that accepting one more project would leave him resentful and overextended.

David stared at the blinking cursor for nearly twenty minutes. “Thanks, but I can’t” sounded abrupt. A long explanation felt uncomfortable and perhaps unprofessional. He also did not want to imply that he might be available next month when he genuinely did not know. The difficulty was not finding the words “no.” It was communicating a clear decision while preserving goodwill and avoiding promises he could not keep.

Here is the exact prompt to use:

Copy and paste this into ChatGPT or Claude:

> Please help me write a professional email declining an opportunity. > > The recipient is [name and role], and our relationship is [brief description - for example, “a former colleague I respect” or “a client I have worked with for three years”]. > > They asked me to [briefly describe the request]. > > I need to decline because [give the real reason in plain language]. I do not want to share these private details: [list anything that should remain confidential]. > > My preferred tone is warm, appreciative, direct, and professional. I do not want the email to sound apologetic, evasive, or as if I am inviting further negotiation. I also do not want to promise future availability unless the wording makes clear that it is uncertain. > > Please write three versions: > 1. A concise version of 75 - 100 words > 2. A warmer version of 125 - 150 words > 3. A very direct version of no more than 60 words > > Each version should thank the person for thinking of me, clearly decline the opportunity, give a brief appropriate reason without oversharing, and close respectfully. Do not invent details, make excuses, or say “maybe later” unless I explicitly ask for that. After the drafts, explain in two or three sentences what each version communicates differently.

Why this prompt works: A good decline email depends on **relationship, tone, boundaries, and length**, not merely grammar. This prompt tells the AI what happened, what must remain private, and what the email must accomplish. Asking for three lengths is practical because a message to a close colleague may need warmth, while a routine business request may be best handled in four sentences. The instruction not to invent excuses prevents the polished but misleading language AI sometimes supplies.