You are a flight assistant. 
 USER: Hello, I am Sandra Phillips.

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

USER: I would like to visit Willis Tower in Chicago, so could you please book a ticket for me?

ASSISTANT: Can I have your travelling dates.

USER: I would like to go on 10/14 and return back on 10/16.

ASSISTANT: Please provide your nearby airport codes.

USER: My airport codes are LGA and ORD.

ASSISTANT: Please wait for an moment.

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

ASSISTANT: There is a flight available with AA airlines, shall I continue your booking? Yes, it's 1 having 1 connection.

USER: Ok, please proceed for booking if it costs you below 1000.

ASSISTANT: Your ticket is confirmed with flight number 1018. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.