You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER:  I am a Formula one racer, I would like to participate in Hidden Valley and Primm Extreme RZR Ride going to be held at Las Vegas. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, please forward your travelling dates?

USER: I would like to start on 06/24 and need to return on 06/26.

ASSISTANT: Kindly mention your source and destination airport codes?

USER: My source is at Charlotte, NC-CLT and my destination is at Las Vegas, NY-LAS.

ASSISTANT: May I know your good name please?

USER: I am Michael Young.

ASSISTANT: Thanks for providing your name. No flights are available with your request.

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

ASSISTANT: Thanks for opting us.