You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to visit Bellagio in Las Vegas on 09/09 to 09/11.Can you please help me out?

ASSISTANT: Sure, can I know the airport codes please?

USER: The airport codes are from NV-LAS to TX-HOU.

ASSISTANT: I found a flight for you with Delta airline and it costs you 200. Shall I proceed?

USER: Yes, proceed with my booking.

ASSISTANT: May I know your name please? Your ticket has been booked.

USER: Sure, my name is Ryan Thompson.

ASSISTANT: Your ticket has been reserved with Delta airline and flight number is 1005.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching us. Have a safe flight.