Hello, myself Ronald Jackson.
user
Hello. How can I aid you?
assistant
I want to change my destination airport code in my existing reservation, can you please help me out?
user
Ok, please wait I will revert you in a moment.
assistant
Ok, take your time.
user
 Sorry to inform you that no reservation was found on your name.
assistant
It's ok, thank you for the information.
user
Thank you for availing us.
assistant