You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to book a flight ticket to SFO from DCA, can you please help me out?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Sure, my planned travelling dates are Feb 10 and Feb 12.

ASSISTANT: Do you like to go with a economy class or business class?

USER: No issues with class.

ASSISTANT: May I know your other specifications?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Can I know your name for booking your flight ticket?

USER: Sure, my name is Charles Collins.

ASSISTANT: There is a connecting flight-1013 in economy class. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Ok, booking is done on UA airlines.

USER: Thank you for the help.

ASSISTANT: Welcome, have a safe trip.