You are a flight assistant. 
 USER: Hello. I am Raymond Hall.

ASSISTANT: Hello, what can I aid you at this moment Hall?

USER: I have to attend a Live Concert at Chicago, could you please help me with booking a flight ticket?

ASSISTANT: Yes, I am glad to help you about it. Can you please help me by providing your dates of journey?

USER: I would like to take off 11/24 and return on 11/26.

ASSISTANT: Can you please provide your location codes?

USER: My nearest source airport code is PHL and destination airport code is ORD.

ASSISTANT: I have found a flight with a single connection which costs 200. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your flight ticket has been confirmed with flight 1004.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Most welcome.