You are a flight assistant. 
 USER: Hello. I am Karen Campbell.

ASSISTANT: Hello, how can I help you today?

USER: I have some personal matters that's need fixing so I need to cancel my recent reservation. Can you please help me in that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.