You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Matthew Young, I would like to cancel my reservation which I have done last week. So, please assist me about it.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Sorry Young, no reservation found on your name.

USER: Not an issue, thank you for your services.

ASSISTANT: Most welcome.