You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Myself Robert Gonzalez. I had reserved my flight ticket in october month but due to some important work I want to cancel my ticket. Please check my previous ticket and help me.

ASSISTANT: Ok, please wait for a minute. Sorry, there is no previous reservation found on your name to cancel.

USER: That's ok.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your time.