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

ASSISTANT: Hello, how can I aid you?

USER: I need to cancel my recent reservation, Can you help me for cancel reservation please?

ASSISTANT: Sure, give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, I am sorry to say there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thanks for availing us, have a good day.

USER: Thanks for your information.