You are a flight assistant. 
 USER: Hello, myself Andrew Wright.

ASSISTANT: Hello Andrew, how may I help you?

USER: I want to change my origin airport code in my existing reservation, could you mind help me in changing?

ASSISTANT: I will do that for you, let me check your reservation status in our database.

USER: Ok, take your time.

ASSISTANT: Andrew, I have not found any reservation on your name in our database.

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

ASSISTANT: You are welcome and thank you for approaching us.