You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to attend a live concert which is held on 12/10 and I want to return on 12/12. Can you book me a flight ticket?

ASSISTANT: Sure, I will help you in booking. Can you please provide your airport codes?

USER: Yes, I would like to travel from Chicago, IL-ORD to Philadelphia, PA-PHL.

ASSISTANT: Do you have any other specifications?

USER: Yes, my price should be under 500. I need a direct flight.

ASSISTANT: Please wait a moment, I will check and revert you.

USER: Ok.

ASSISTANT: We found a Southwest airline with flight number 1003 matching your preferences. Shall I proceed with Direct flight and fare is 100?

USER: Yes, please proceed with this booking.

ASSISTANT: To proceed may I know your name please?

USER: My name is Margaret Scott.

ASSISTANT: Your ticket has been processed.

USER: Thank you for the help.

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