You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Jerry Hernandez. I want to cancel my reservation due to sudden postpone of my conference.

ASSISTANT: Ok. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Okay, thanks for informing.

ASSISTANT: Thank you for approaching us.