You are a flight assistant. 
 USER: Hello, I am James Davis.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a event in Chicago, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you. Please send your airport codes.

USER: Sure, my source and destination airport codes are DTW and ORD.

ASSISTANT: Noted. Please send your travelling dates.

USER: I would like to go on 03/02 and return back on 03/04.

ASSISTANT: Can I have a moment please?

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with UA airline, shall I book it?

USER: Ok, please proceed for further if it costs you below 500.

ASSISTANT: Your booking is done with flight number 1002. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.