You are a flight assistant. 
 USER: Hello. This is Daniel Brown.

ASSISTANT: Hello, What kind of help are you expecting from our side?

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

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Thanks for waiting, we found a reservation on your name and it has been cancelled successfully.

USER: Ok, thanks for your quick response.

ASSISTANT: Thank you for your presence. We hope to serve you again.