You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to search a flight from Denver, CO-DEN?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Can you provide your travelling dates?

USER: The travelling dates are 11/08 to 11/10.

ASSISTANT: May I know your exact destination airport code?

USER: The destination airport code is NV-LAS.

ASSISTANT: Can you provide your name for further proceeding?

USER: Sure, my name is William Phillips.

ASSISTANT: Thank you for your information, I found a direct flight in Spirit airlines, can I proceed to book your ticket?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your ticket booking is done in 1021 flight number to you region.

USER: Thank you for your help.

ASSISTANT: Have a happy journey. You are welcome.