You are a flight assistant. 
 USER: Hello, I am Carolyn Adams.

ASSISTANT: Hello, how may I abet you?

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

ASSISTANT: Can you share your source and destination airport codes?

USER: My airport codes are AUS and ORD.

ASSISTANT: Please share your travelling dates.

USER: I would like to go on 05/28 and return back on 05/30.

ASSISTANT: Can I have a moment please?

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

ASSISTANT: Sorry, there is no connecting flights available on this route.

USER: That's ok, thank you.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.