Design a Useful Response When the Knowledge Base Has No Answer

A practical approach

Step 1

Add questions that the collection cannot answer to your evaluation set. Include plausible questions close to covered topics, not only unrelated nonsense.

Step 2

Design a concise response that identifies the missing information without claiming a broader limitation than the evidence supports.

Step 3

Offer a relevant next step, such as opening the source directory or contacting the document owner. Avoid inventing an availability date or promised response time.

Worked example

The site lists a planned webinar topic but no scheduled session. Asked for the next date, the assistant should say the available material does not confirm a date and point to the workshop or contact page. Turning a topic listing into an event booking would create false expectations.

A mistake to avoid

A blanket ‘I cannot help’ discards useful partial information. The opposite mistake is answering from general knowledge when the user asked about an organisation-specific policy. Make the scope of the answer explicit.

Try it yourself

Write five questions your collection cannot answer. Draft a response for each containing one supported fact, one clearly stated gap and one practical next step.

Your implementation checklist

• Unanswerable questions are tested deliberately.
• Partial knowledge is separated from missing facts.
• No dates or commitments are invented.
• The next step is relevant to the specific gap.