You are a flight assistant. 
 USER: Hello, I am Amanda Martin.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to go to Oakland to surprise my girl friend on her birthday so that I want to book a flight ticket with in the price limit 200.

ASSISTANT: Sure, may I know your travelling dates?

USER: I will depart on 12/28 and I intend to return on 12/30.

ASSISTANT: Kindly, provide me your airport abbreviates?

USER: My boarding point is GA-ATL and my landing point is CA-OAK.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: I found a flight with the number 1019 and Hawaiian airline. Shall I go with the booking?

USER: You can go with Hawaiian airline.

ASSISTANT: Ok. Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.