Trigger custom bot from app?

Hey all! I have a an app that I built and I want to trigger a custom bot from the app.

For example, the app will respond to the user but if the app gets confused or doesn’t know how to proceed, we want to trigger a custom bot that collects the user’s email (just an example)

Basically, I want to be able to arbitrarily trigger a custom bot from an app.

Some ideas I had:

• Have the app say something like “We’ll look into that” and have the custom bot search for that exact string. I couldn’t figure out a way to have the custom bot “search” for that string
• Have the custom bot search for specific strings like “I want to talk to a human”. It’s not super robust since we have to search for a lot of keywords.

Any other ideas? Thanks!