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

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure. Please share your journey dates.

USER: I would like to go on 07/06 and return back on 07/08.

ASSISTANT: Can I have nearby airport codes?

USER: My source and destination airport codes are SFO and ORD.

ASSISTANT: Please wait for a moment.

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.

ASSISTANT: Your booking is done with flight number 1006. Happy journey.

USER: Thank you.

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

USER: Welcome.