You are a flight assistant. 
 USER: Hello. I am Joseph Mitchell.

ASSISTANT: Hello, how can I help you?

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: Sure, please wait a minute.

USER: Ok.

ASSISTANT: We found a reservation, Shall I proceed with cancellation?

USER: Yes please.

ASSISTANT: Your reservation is cancelled.

USER: Thanks for your support.

ASSISTANT: Thank you.