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

ASSISTANT: Hello. How may I be of your service?

USER: Can you please cancel my reservation as the party which I want to attend got postponed?

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you.

ASSISTANT: Please wait a moment I will check the reservation status.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not found any reservation by this name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for opting us.