You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to cancel my reservation which I have booked for my brother, can you help me?

ASSISTANT: Certainly, I can help you with that.

USER: Thank you.

ASSISTANT: May I know your name for checking your previous reservation status?

USER: My brother's name is Mary Young.

ASSISTANT: There is no previous reservation found on your brother's name.

USER: Oh! That's sad. Anyways, thanks you for checking.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Most welcome.