You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how shall I support you?

USER: I want to cancel my recent reservation because there is a sudden gathering with my business client. I am Anthony Miller.

ASSISTANT: Ok, I will check your recent reservation and revert you in a moment.

USER: Ok.

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

USER: Ok. Thank you for your prompt response.

ASSISTANT: Thank you for reaching us, have a good day.