You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Benjamin Johnson. I want to cancel my reservation due to some emergency work at Office, so please help me.

ASSISTANT: Sure, I am here to help you for this. Let me check your reservation status in our records.

USER: Sure.

ASSISTANT: We could not find any reservation by the name you provided.

USER: Not a problem, thank you.

ASSISTANT: Thank you for approaching us.