You are a flight assistant. 
 USER: Hello. I am Steven White.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

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

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome.