You are a flight assistant. 
 USER: Hello, I am Linda Wilson.

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

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

ASSISTANT: Can I have your journey dates?

USER: I would like to go on 11/18 and return back on 11/20.

ASSISTANT: Please send your nearby airport codes.

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

ASSISTANT: Please give me a moment.

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

ASSISTANT: There is a flight available with Delta airlines, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1005. Happy journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.