You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am planning to book a ticket from DCA to LAX. Can you please help me out?

ASSISTANT: Sure, help me with the trip dates?

USER: I am planning to travel on Dec 22 and return back on Dec 24.

ASSISTANT: May I know your name please?

USER: My name is Joseph Barker.

ASSISTANT: Do you have any specifications to be met?

USER: No.

ASSISTANT: We found a flight in an airline Hawaiian with 1015 number having a single connection in an economy class.

USER: That's fine, please proceed the booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.