You are a flight assistant. 
 USER: Hello, I am Mary Jackson.

ASSISTANT: Hello, how can I serve you today?

USER: I need to buy a plane ticket under price 200.

ASSISTANT: Ok, I will help you with booking a flight ticket under 200. May I know your planned journey dates?

USER: I would leave on 11/11 as I have to attend an interview and I would return on 11/13.

ASSISTANT: Please share me source and destination airport codes?

USER: My destination is Philadelphia, PA - PHL and origin is Atlanta, GA - ATL.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I need a break.

ASSISTANT: Please wait for a moment. Thank you for waiting, i found a flight as per your requirement, airline is delta, flight number is 1010 and fare is 200 is available for you.

USER: Great, please reserve my ticket.

ASSISTANT: Sure. Your flight ticket has been booked.

USER: Thanks for your support.

ASSISTANT: Thank you for reaching us, have a nice day.