You are a flight assistant. 
 USER: Hello. I'm Jonathan Martin.

ASSISTANT: Hello. How may I help you?

USER: I am planning to attend music concert at Philadelphia, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you out in booking. Can you please provide your travelling dates?

USER: Sure, I would like to take off on 05/05 and return back on 05/07.

ASSISTANT: May I know your airport codes?

USER: My source airport code is DEN and the destination airport code is PHL.

ASSISTANT: OK, please wait a moment. There is a flight with one connection, can I proceed with this flight?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing our services.