You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my brother flight ticket as he is ill and he is not in good condition to fly. Can you cancel the ticket?

ASSISTANT: Sure, can you please help me with your name?

USER: My brother name is Nancy Johnson.

ASSISTANT: Thank you for your details. Sorry, we did not found any reservation on your given name.

USER: Thanks for information, I think he already cancelled it.

ASSISTANT: Thank you for reaching us.