You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Matthew Lee. My family tour trip got postponed, so I want to cancel my reservation.

ASSISTANT: Sure. Please give me a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name to cancel.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.