You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am William Jackson. I want to cancel my recent reservation, can you help me with it?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: That's fine, I think it has been cancelled already.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your assistance in checking the reservation.