You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I have already reserved my ticket, but right now I want to cancel that reservation.

ASSISTANT: Can I know your name?

USER: I am Nancy Parker.

ASSISTANT: Give me a minute Nancy, I will be back with the details. Sorry, there is no reservation found on your name.

USER: It's ok. Thank you.

ASSISTANT: Welcome.