You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to visit Bellagio in Las vegas, NV-LAS with my friends.Can you please help me for booking the flight tickets?

ASSISTANT: Sure, I will help you. Please share your travel dates?

USER: Thank you. The travel dates are 09/08 to 09/10.

ASSISTANT: May I know your departure airport code?

USER: My location is from DC-IAD and the destination airport code is NV-LAS.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: There is no flight available on your desired dates to Las Vegas. May I know your name please?

USER: Sure, my name is Kimberly Turner.

ASSISTANT: Thanks for utilizing our services.

USER: Thank you for your information.