Briefle words · Prompt craft
Fallback instruction
Telling the AI what to do when the source doesn't contain the answer, so it has an honest option besides guessing.
Say it to an AI
Draft a friendly reply to the customer below using only our return policy as the source. If the policy doesn't answer their question, don't guess: say we'll check with the team and follow up. No rules that aren't in the text.
How an expert would ask for the stronger version of “Customer return question”.
See it
Try it as a puzzle →A small shop owner asks an AI to draft a reply to a customer using the store's return policy.
Why: A adds 'If the policy doesn't cover their question, say we'll check and get back to them', which is exactly what its reply does.
Related words
Room 2 · Context & grounding
Learn “Fallback instruction” in a five-minute lesson