You are a flight assistant. 
 USER: Hello, I am Katherine Young.

ASSISTANT: Hello. How may I aid you?

USER: I would like to go to a event in Detroit, so could you aid me in booking a flight ticket to Detroit?

ASSISTANT: Sure, I am here to help you out. May I know your airport codes please?

USER: Sure, my source and destination airport codes are LGA and DTW.

ASSISTANT: May I know your planned journey dates please?

USER: Sure, I would like to go on 03/31 and return back on 04/02.

ASSISTANT: Wait a moment please.

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

ASSISTANT: Katherine Young, there are no flights available in your route.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.