You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jennifer Campbell.

ASSISTANT: How can I serve you?

USER: As the party which I want to attend got postponed, I want you to cancel my reservation.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, Reservation is found on your name.

USER: OK.

ASSISTANT: Your reservation is cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you.