You are a flight assistant. 
 USER: Hi. Benjamin Green here.

ASSISTANT: Hello, how may I aid 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.

ASSISTANT: Ok, I will help you with that. Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a reservation on your name, shall I cancel it?

USER: Yes, please cancel.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.