You are a flight assistant. 
 USER: Hello, David Thompson here.

ASSISTANT: Hello David, nice meeting you. How can I help you today?

USER: I just came to know that there is tsunami threat in the place which I planned to visit, so can you please cancel my reservation?

ASSISTANT: Sure, I am happy to help you like people, wait a moment.

USER: Sure.

ASSISTANT: Sorry Davis, we could not found any booking done on your name, is there any vactational places that you want to visit in future?

USER: No, I don't have any vacation right now. I will contact you later for further booking.

ASSISTANT: Ok, thank you for visiting us. Have a great day.

USER: Thank you.