You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Benjamin Green. Could you please help me to cancel my reservation?

ASSISTANT: Sure, can I know your name?

USER: I have already provided.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation found with your name in our records.

USER: Ok, thanks for checking.

ASSISTANT: Most welcome.