You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Charles Young. I am planning to book a ticket from HOU to DEN. Can you please help em out?

ASSISTANT: May I know your dates please?

USER: I would like to travel on 02/09 and return back on 02/11.

ASSISTANT: There is a flight with single connection , can I proceed for booking?

USER: My connection limit is 0.

ASSISTANT: I am sorry no flights with 0 connections.

USER: That's fine.

ASSISTANT: Thank you.

USER: Thank you for your service.