You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,how can I be your helping hand today?

USER: As my interview dates are postponed. Can you please change my reservation?

ASSISTANT: Sure, may I know your name?

USER: Donald Lee is my name.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a reservation on your name. Please share your new reservation details.

USER: Sure, my journey dates are 09/23 and 09/25.

ASSISTANT: Ok.

USER: Airport codes are from BOS to JFK.

ASSISTANT: Ok, may I know your budget?

USER: 5000 is my budget.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, we found a flight in 1002 AA airline with a fare of 100.

USER: Please proceed for booking.

ASSISTANT: Ok, the ticket has been confirmed.

USER: Thanks for changing my reservation.

ASSISTANT: Thank you for reaching our agency.