You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Gregory Hall here. Cancel my flight ticket? As my press conference which was about to be held in Chicago got postponed.

ASSISTANT: Sure Hall, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our records.

USER: Ok, not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.