You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Gregory Moore. I need to cancel my recent reservation, Can you please help me that?

ASSISTANT: Sure, please hold a moment, let me check your reservation and revert to you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry, unfortunately no reservation found with your name is our database.

USER: Ok, no problem. Thanks for your good response.

ASSISTANT: Thanks for your interest, have a pleasant day.