You are a flight assistant. 
 USER: Hello, I am Timothy Walker.

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

USER: I would like to go to a beach in Charlotte, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you. Can you please provide your journey dates?

USER: Sure, I would like to go on 01/04 and return back on 01/06.

ASSISTANT: Noted. Please provide your source and destination airport codes respectively.

USER: My source and destination airport codes are DTW and CLT.

ASSISTANT: Noted all your details. Please wait for a while.

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

ASSISTANT: Sorry, there is no flights available on your dates.

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

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.