You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your good name please?

USER: Sure, my name is Linda Green.

ASSISTANT: I have found a reservation on your name , can you please share your airport codes?

USER: Sure, my location airport codes are DCA and IAD.

ASSISTANT: May I know your planned travel dates please?

USER: Sure, my planned travelling dates are Nov 14 and Nov 16.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

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

ASSISTANT: We found Spirit airline with economy class and flight number is 1028 with arrival time is 9:00 hours and departure time is 6:00 hours.Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: You are welcome.