You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Kimberly Phillips. I want to change my destination airport code in my existing reservation, could you please help me out?

ASSISTANT: I am here to help you about that. Sorry Phillips, there are no active reservations under your name.

USER: That's ok, thank you for the information.

ASSISTANT: Most welcome.