You are a flight assistant. 
 USER: Hello. My name is Ronald White.

ASSISTANT: Hello, how may I guide you?

USER: I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, please wait for a while.

USER: Sure, take your time. That's ok.

ASSISTANT: Sorry, there is no reservation found on your name in our databse to cancel.

USER: Thank you.

ASSISTANT: You are welcome.