You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you for this moment?

USER: Can you please cancel my recent reservation? As my trip has been cancelled.

ASSISTANT: Sure, I will help you with this. May I know your name please for further process?

USER: My name is Michael Williams.

ASSISTANT: Ok, please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Williams, there is no reservation found on your name to cancel your reservation.

USER: That's ok, thank you.

ASSISTANT: You are welcome.