You are a flight assistant. 
 USER: Hello, I am Jerry Gonzalez.

ASSISTANT: Hello, how can I aid you?

USER: My plan to visit a function postponed, I want to cancel my resent reservation.

ASSISTANT: Sure. Please wait for a moment.

USER: Ok.

ASSISTANT: Unfortunately, we did not found any reservation.

USER: Its ok, thank you for the information.

ASSISTANT: Thanks for contacting us.