You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how I guide you?

USER: Matthew Young here. I want to cancel my reservation which I have done last week. Can you please help me about it?

ASSISTANT: Ok, please wait.

USER: Ok, sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, fine. Thank you for the information.

ASSISTANT: Most welcome.