You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Kenneth White. I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure Kenneth, I am here to help you with this.

USER: Thank you.

ASSISTANT: Sorry Kenneth, there is no reservation found as per your name to cancel it.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome.