You are a flight assistant. 
 USER: Hello, I am Kimberly Mitchell.

ASSISTANT: Hello, how can I support you today?

USER: I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Sure, I will help you with cancellation. Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any reservation found on your name.

USER: Ok, no problem. Thanks for your service.

ASSISTANT: Thanks for visiting us, have a nice day ahead.