You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Mitchell, want to cancel my recent reservation due to some personal issues. Please help me out with that.

ASSISTANT: Sure John, let me check your reservation status in our database.

USER: Sure.

ASSISTANT: John sorry to intimate, no reservation is found on your name in our database.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you John for utilizing our agency.