You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Alexander Anderson. I need to cancel my reservation as I need to stay back in own city due to my house has collapsed by Floods. Can you help me?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found according to your name.

USER: That's Fine. Thank you.

ASSISTANT: Thank you for choosing us.