You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am John Hernandez.

ASSISTANT: John, how can I aid you today?

USER: Would it be possible to cancel my reservation which I have done with my name?

ASSISTANT: Yes, it is possible.

USER: Thanks.

ASSISTANT: Hold on for a moment. Let me check in our data base.

USER: Sure, take your time.

ASSISTANT: Sorry John, there are no flights reserved on your name formerly.

USER: It's ok, thanks for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.