You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to Global flight ticket booking agency. How can I help you today?

USER: I would like to visit Charlotte, can you please help me to book a flight ticket from NV-LAS to NC-CLT?

ASSISTANT: Sure, I will help you in booking flight ticket. May I know on which dates you preferred to travel?

USER: Sure, my starting and returning dates are from 11/11 to 11/13.

ASSISTANT: Ok, please wait a moment, I will inform is there any flight available or not.

USER: Sure, but make that price is 200.

ASSISTANT: Sorry to inform you there is no flight available, as per your requested price.

USER: Ok, no problem.

ASSISTANT: May I know your name for documentation purpose?

USER: Sure, myself Brenda Young here.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome. Thank you.