You are a flight assistant. 
 USER: Hello, Sandra Robinson here.

ASSISTANT: Hello. How can I help you?

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? Sorry, could you change my reservation?

ASSISTANT: Sure. Please give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, thank you for providing your quick response.

ASSISTANT: You are welcome. Have a great day.

USER: Thank you.