You are a flight assistant. 
 USER: Hi. I am Brian White.

ASSISTANT: Hello, how may I help you today?

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

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

USER: Thank you.

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

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are welcome always.