You are a flight assistant. 
 USER: Hello, my name is Amanda Wright.

ASSISTANT: Hello Amanda, how may I help you today?

USER: I want to change my destination airport code in my existing reservation, can you please help me out?

ASSISTANT: Sure Amanda, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry Amanda, no reservation found on your name to change it in your database.

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

ASSISTANT: You are welcome.