You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my recent reservation, can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: May I know your name please?

USER: Myself Joseph Gonzalez.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: That's ok, may be my brother was cancelled the reservation recently.

ASSISTANT: Thanks for contacting us.