Safe RAG customer support with “I don’t know” fallback
Use a documentation-grounded (RAG) support agent that refuses to answer when it can’t retrieve strong supporting docs, and instead responds with an “I don’t know” style fallback to avoid hallucinated instructions and reduce follow-up tickets.
Why the human is still essential here
Humans set the fallback policy/thresholds, own the customer relationship, and handle escalations or edge cases; AI assists by answering only when it can cite/ground in approved documentation.
How people use this
Intercom Fin handoff when it can’t answer
Configure Intercom Fin to answer only from approved knowledge sources and automatically hand off to a human teammate when it can’t find a confident response.
Intercom FinZendesk AI Agent with grounded generative replies + escalation
Use Zendesk’s AI Agent generative replies powered by your Help Center content and route the conversation to an agent when the bot can’t produce a suitable knowledge-grounded answer.
Zendesk AI Agent (Advanced) / Zendesk GuideCustom RAG bot with strict confidence threshold
Build a support chatbot that retrieves relevant docs from a vector database and responds with an explicit “I don’t know” (plus escalation options) when retrieval confidence or citations fall below a set threshold.
OpenAI GPT-4o / LangChain / Pinecone