You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you the best today?

USER: I would like to cancel my brother's reservation as he is unwell, can you please help me?

ASSISTANT: May I know on which name your ticket has been reserved?

USER: The ticket has been reserved with the name of Anthony Garcia.

ASSISTANT: Just hold on a moment, let me check and revert to you.

USER: Sure.

ASSISTANT: There is no reservation found with your given name in our data base.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us.

USER: Thank you.