“Chat bot API”

Hey!
I'm looking for a service to build Intercom/Crisp chat but that is an integral part of my software.

What I'm looking for is a way to create a chat windows that qualified my customers by allowing them to choose different pre defined answers. I want a GUI to this from the Operator Point of View so that I can edit, test, change these question chains without the developers rebuilding them.

Intercom seem to do basically everything I need, and a lot more, but I cannot fully customize it to truly be "part of my app" it's rather on top of the app.

Anyone have any tip? Don't really even know what to google to find a Api/microservice like this.