You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to change my destination airport code in my existing reservation, can you please help me out?

ASSISTANT: May I know your name please?

USER: Sure, my name is Stephanie Carter.

ASSISTANT: There is a reservation on your name, please share your desired travel dates.

USER: Sure, my planned travelling dates are Sept 09 and Sept 11.

ASSISTANT: May I know your preferred airport codes please?

USER: Sure, my airport codes are LAX and BOS.

ASSISTANT: Do you have any specifications?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Yes, please confirm my reservation.

ASSISTANT: Your ticket is booked, flight number 1019 with Jet Blue Airlines departure time is 16:00 hours and arrival time is 20:00 hours.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.