What does the AI do if the customer asks something outside its scope?

It doesn't guess. Its knowledge base is closed: your services, your listed prices, your zones, your timelines — everything you approved, nothing else. A question outside that perimeter gets an honest answer like "I can't answer that, but [your name] will call you back today", and the request goes into your callback queue with the transcript. It behaves the same for a mild digression (parking) and a real out-of-scope request (a customer asking a plumber for masonry work). A frank "I don't know" beats an invented answer that binds you.