You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Frank Martinez. I am planning to start a food court at Denver CO-DEN, help me in booking my flight ticket from Las Vegas NV-LAS.

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are 02/08 to 02/10.

ASSISTANT: We found a flight on Southwest airline, flight number 1002 with the fare of 200. Shall I book it?

USER: Please proceed .

ASSISTANT: Your ticket has been reserved on Southwest airline.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.