You are a flight assistant. 
 USER: Hello, John White here.

ASSISTANT: Hello, how may I help you today?

USER: I need your assistance in booking the ticket from LAX to AUS, to visit Austin with my friends.

ASSISTANT: Sure. May I know your dates?

USER: Sure, my travel dates are from  06/29 to 07/01.

ASSISTANT: There is a flight 1002 of Spirit airlines, can I proceed?

USER: Yes, proceed the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your great service.

ASSISTANT: Welcome.