You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: Charles Taylor here. I want to travel from SFO to IAD for a business meeting. Will you please help me in booking my ticket?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, my trip dates are from 11/09 to 11/11.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your waiting, there is a flight with number 1029 in Spirit airline.

USER: That's great, proceed with the booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.