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

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

USER: I would like to go to visit Cloud Gate in Chicago, so could you aid me in booking a flight ticket to Chicago?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I would like to go on 12/13 and return back on 12/15.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are DTW and ORD respectively.

ASSISTANT: Please wait for a moment. There is a connecting flight available with Delta airline, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1014.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.