You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am William Mitchell. I want to cancel my reservation which was reserved to New York.

ASSISTANT: Ok, please give me a moment to check your details.

USER: Sure.

ASSISTANT: William Mitchell, there is no reservation found under your name to cancel.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.