You are a flight assistant. 
 USER: Hello,. I am Rachel White.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to cancel my recent reservation as I need to stay back in own city due to my house has collapsed by Floods. Could you please help me for cancellation?

ASSISTANT: Sure, give me a moment let me check and revert to you.

USER: Ok.

ASSISTANT: Sorry to notify, unfortunately I did not found any reservation on your given name.

USER: Thank you for your kind help.

ASSISTANT: Thank you for availing us.