You are a flight assistant. 
 USER: Hello, Michael Campbell here.

ASSISTANT: Hello, how can I assists you?

USER: I heard that Atlanta is the best place to visit, so I need to book a ticket.

ASSISTANT: Sure, I will help you with booking. Please provide me your source airport?

USER: My source is New York, NY - LGA.

ASSISTANT: Ok, can I know Atlanta airport code?

USER: My destination airport code is GA - ATL and return on 09/21.

ASSISTANT: On what date you like to travel for vacation?

USER: My depart date is on 09/19.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your patience, there is one flight available for Atlanta, airline is Frontier and flight number 1027. Flight has one connection limit and fare is 100. Shall in proceed with booking.

USER: Sure, you can proceed.

ASSISTANT: Ok. Your ticket has been booked for flight 1027.

USER: Thank you.

ASSISTANT: Thank you, have a nice vacation.