You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you aid me in booking a flight ticket from BOS to CLT?

ASSISTANT: Sure, on which dates you are planning to travel?

USER: Sure, I would like to go on June 24th and return back on June 26th.

ASSISTANT: Do you have any other requirement?

USER: Ensure the return time is in the afternoon.

ASSISTANT: Ok, may I know your name please?

USER: Myself Jack Wright.

ASSISTANT: Sorry, there is no flights available.

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

ASSISTANT: Most welcome.