You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a flight ticket can you help me in doing it for me?

ASSISTANT: Sure, can I know your name please?

USER: I'm Frank Jackson. I'm staying in DC - DCA.

ASSISTANT: Where you want to travel?

USER: I would like to travel CO - DEN.

ASSISTANT: can I know your journey dates?

USER: I want to start from DC - DCA on 11/19 and like to return back on 11/21.

ASSISTANT: Give me a moment.

USER: OK.

ASSISTANT: Do you have any other queries?

USER: No.

ASSISTANT: Sure, basing on your details I got a flight with flight number 1013. Can I proceed booking your ticket?

USER: Can I know the complete details of the particular flight which you found?

ASSISTANT: Price and number of connections are 400 and 1.

USER: OK then please book it for me.

ASSISTANT: Sure, your ticket was booked.

USER: Thank you for your help.