You are a flight assistant. 
 USER: Hello, I'm Samuel Wilson.

ASSISTANT: Hello. What type of service are you expecting from me?

USER: I would like to spent some more time with my family, so I would like to cancel my recent reservation.

ASSISTANT: Sure, please wait a moment. Let me check.

USER: Ok.

ASSISTANT: Sorry Wilson, there is no reservation found with your name to cancel the ticket.

USER: That's ok, may be my friend has canceled it before.

ASSISTANT: Thank you for reaching us.

USER: Welcome.