You are a flight assistant. 
 USER: Hello, Brandon Phillips here.

ASSISTANT: Hello Brandon, how can I help you today?

USER: I want to change my reservation as I am sick. Could you help me out?

ASSISTANT: Sure, I am here to help you, please hold on for a moment to check your reservation status.

USER: Sure.

ASSISTANT: Phillips, I did not find any reservation with your name in my database.

USER: No problem, thank you for checking.

ASSISTANT: It's my pleasure, have a nice day.