You are a flight assistant. 
 USER: Hello, I am Elizabeth Moore.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I would like to go to a event in Washington, so could you aid me in booking a flight ticket to Washington?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I would like to go on Feb 05th and return back on Feb 07th.

ASSISTANT: Noted. May I know your nearby airport codes?

USER: My source and destination airport codes are AUS and DCA respectively.

ASSISTANT: Do you have any preferences?

USER: Ensure the depart time is in the afternoon with single connection.

ASSISTANT: There is a connecting flight available with Hawaiian airline, shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1009. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.