You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: Mark Jones is my name.

ASSISTANT: What can we do for you today?

USER: I need to visit Los Angeles, CA - LAX to attend my brother friend's marriage.

ASSISTANT: OK.

USER: Can you please help me in booking flight ticket from Charlotte, NC - CLT?

ASSISTANT: Sure. On which dates you want me to book your ticket?

USER: My preferable dates are departure on 09/15 and return on 09/17. Make sure that I need one connection with fare of 200.

ASSISTANT: Sorry to inform you that, no flights are available on that price limit.

USER: Ok, no problem.

ASSISTANT: Thanks for approaching us, have a nice day.

USER: Thank you for your information.