You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello, how may I guide you?

USER: I am Amanda Robinson. I would like to book a flight ticket from LAX to CLT.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to move on 11/21 and return back on 11/23.

ASSISTANT: I am sorry, there are no flights available.

USER: Ok, no problem. Thank  for the information.

ASSISTANT: Thank you, have a good day.