Choose the paid job
Start with a repeated, expensive decision or handoff, not with a generic chatbot. Name the buyer, triggering event, approved inputs, useful output, accountable owner, and the measurable sign that the job is complete. If you cannot test the output, you cannot promise it responsibly.
A clever demo is not a service. Buyers need reliable access, current sources, corrections, identity, revocation, and someone accountable when a provider, document, or workflow changes; those recurring obligations determine whether the offer has margin.
Record a baseline before launch, then compare completed jobs, corrections, safe refusals, time, support load, and cost.