You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from PHX to LAX. Can you please help me with booking?

ASSISTANT: Sure, when are you willing to travel?

USER: I would like to start my journey on Dec 16 and return back on Dec 18.

ASSISTANT: May I know your name please?

USER: Sure, myself Patricia Thompson.

ASSISTANT: Do you have any preferences?

USER: I need to book my ticket in economy class.

ASSISTANT: We found a flight in an airline American with 1017 number in an economy class. Shall I proceed to book?

USER: That's perfect, please proceed with that ticket booking.

ASSISTANT: Your flgiht ticket has been booked.

USER: Thank you for your help in booking my ticket for the flight-1017.

ASSISTANT: Thank you for reaching us.