You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to visit Heritage Square in Phoenix.Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please help me with your source and destination airport code names?

USER: Sure, the source code is from NY-EWR and the destination airport code is AZ-PHX.

ASSISTANT: May I your preferable journey dates for booking flight ticket?

USER: The journey dates are from 09/19 to 09/21.

ASSISTANT: Ok, just give me a moment, I will check flight availability.

USER: Sure, take your time.

ASSISTANT: I found a flight as per your requested dates, airline is UA and flight number is 1000. Shall I proceed?

USER: Yes, proceed with my booking.

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

USER: Sure, my name is Stephen Allen.

ASSISTANT: Your flight ticket has been booked successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us, have a nice day.