You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am Ryan Martin. I want to cancel my reservation, due to my business meeting got postponed. So please help me in cancellation.

ASSISTANT: Sure, wait a minute,let me check your reservation status.

USER: Ok.

ASSISTANT: Sorry, we could not found your reservation.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.