You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Michelle Green here. I just want to cancel my recently done reservation, because of cancellation of my political meeting. Can you please help me in that?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry Green, there is no reservation found on your name.

USER: That's fine. Thank you for your information.

ASSISTANT: You are welcome.