You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Benjamin Miller. Can you please help me in cancelling recent reservation?

ASSISTANT: Sure Miller, I am here to help you.

USER: Ok, thank you.

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

USER: Ok, thank you for you checking.

ASSISTANT: You are welcome always.