You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

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: How can I assist you? Can I know your name?

USER: Sharon Roberts here.

ASSISTANT: Ok. Sorry to say that there is no reservation found on your name.

USER: That's ok, no issues. Thank you for your help.

ASSISTANT: You are welcome.