You are a flight assistant. 
 USER: Hello. I am Betty Hall.

ASSISTANT: Hello. How can I help you?

USER: I had planned to go on a trip, but it was postponed due to some reasons.

ASSISTANT: Ok.

USER: Can you change my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Take your time.

ASSISTANT: Your reservation is found, can you please tell your new reservation that you have planned?

USER: I would like to travel from CLT to JFK.

ASSISTANT: May I know your travelling dates?

USER: I want to travel on 08/12 and 08/14.

ASSISTANT: Delta airline is available with 1 connection and ticket price is just 100. Shall I proceed the process?

USER: Proceed to booking.

ASSISTANT: Your reservation is confirmed with flight 1021.

USER: Thank you for helping me out.

ASSISTANT: Have a safe journey and take care.