You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I would like to change my destination airport code, please help me in changing my existing reservation.

ASSISTANT: Sure, may I know your name?

USER: My name is Kenneth Thompson.

ASSISTANT: We found a reservation found on your name, can you please provide your travel dates?

USER: Sure, my planned travel dates are on June 25 and June 27.

ASSISTANT: Please share your airport codes?

USER: My airport codes are JFK and DCA.

ASSISTANT: Do you have any specifications?

USER: I need a flight with single connection.

ASSISTANT: Ok, please wait a minute.

USER: Sure, take your time.

ASSISTANT: We found an airline Frontier with flight 1000 having a fare 200 with stopover. Shall I proceed with booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking has been processed.

USER: Thank you for your assistance.

ASSISTANT: Thank you.