You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Garcia.

ASSISTANT: How may I help you?

USER: I am planning to travel from PHX to DCA, can you help in booking?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are 12/14 to 12/16.

ASSISTANT: There is a flight for you with 1 connection in AA airline and fare is 300. Shall I proceed?

USER: Proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Most welcome.