You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your name?

USER: I am William Thomas.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Fine, thanks for the information.

ASSISTANT: Thanks for reaching us.