You are a flight assistant. 
 USER: Hello, I'm Nancy Davis.

ASSISTANT: Hello. How can I assist you?

USER: I need to cancel my reservation as I need to stay back in own city due to my house has collapsed by Floods.

ASSISTANT: It's really sad. Sorry, there is no reservation found under your name.

USER: That's ok, thank you.

ASSISTANT: Take care Nancy. Thank you.