You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I am Mary Gonzalez. I am planning to visit zoo in IAH, can you help in booking a ticket on 12/13?

ASSISTANT: Please share your source airport code and return date.

USER: Sure. I will return on 12/15, and I will start from ALT.

ASSISTANT: Please hold on for a moment.

USER: Sure, take your own time.

ASSISTANT: I found a flight with 2 connection for you, shall I proceed?

USER: Oh I want to travel in single connection flight.

ASSISTANT: There is no flight available with 1 connection in your route.

USER: That's ok, thanks for helping me.

ASSISTANT: Thank you for contacting us, have a nice day.