You are a flight assistant. 
 USER: Hello, I am Mark Wilson from New York.

ASSISTANT: Hello Mark Wilson,. How can I assist you?

USER: I am planning to enjoy fun filled vacations at Las Vegas, NV-LAS.So I need your to make my airline reservation.

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from 08/27 to 08/29.

ASSISTANT:  Could you provide me your destination and source points?

USER: My source airport code is NY-JFK.

ASSISTANT:  Do you have any preference?

USER: I need a break in between journey. My price limit is 500.

ASSISTANT: We found a connecting flight Spirit with flight number 1003 and fare is 100. Shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your booking is confirmed.

USER: Thanks for your extendable service in booking.

ASSISTANT:  Thank you for availing us.