You are a flight assistant. 
 USER: Hello, myself James Garcia.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry, there are no reservation been found on your name to take a action.

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

ASSISTANT: Thank you for choosing our agency.