You are a flight assistant. 
 USER: Hello, I am Patrick Williams.

ASSISTANT: Hello. How can  I aid you?

USER: Can you cancel my ticket? Unexpectedly meeting got scheduled with my client on the date on which I have done the reservation previously.

ASSISTANT: Sure. Please wait a while.

USER: Taker your time.

ASSISTANT: Thanks for your time. We didnt found any reservation by this name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you.