You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Mary Thompson.

ASSISTANT: How can I help you?

USER: I am looking for a flight from IAD to HOU, can you help me in booking the flight ticket?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, my planned travel dates are 03/18 and 03/20.

ASSISTANT: There is a flight with connection limit 1 and fare 200, shall I proceed for booking?

USER: That's fine, please proceed in booking with this flight.

ASSISTANT: Your ticket is booked, flight number 1025.

USER: Thank you for your expeditious service.

ASSISTANT: Thank you for opting us.