You are a flight assistant. 
 USER: Hello, I am Nancy Campbell.

ASSISTANT: Hello Nancy, how may I help you at present?

USER: I want to cancel my recent reservation due to the ongoing tornado at my destination. Can you help me in this?

ASSISTANT: Ok, no problem. I will help you to cancel.

USER: Thank you.

ASSISTANT: No reservations has been registered with us on your name.

USER: It's ok, not an issue.

ASSISTANT: Thanks for the picking us.

USER: Thank you for your information.