You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I assist you?

USER: I am Emma Brown, I want to change my reservation as I my cousin is coming to meet me.

ASSISTANT: Please hold on a moment, Let me check and get back to you.

USER: Sure.

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

USER: Thank you for the information.

ASSISTANT: Thank you choosing us.