Hello.
user
Hello, how can I aid you today?
assistant
I want to change my destination airport code in my existing reservation, can you please help me out?
user
Sure, we are glad to serve you.
assistant
Thanks.
user
Before changing your flight reservation. May I know your name?
assistant
Sure, my name is Larry Taylor.
user
Sorry Larry Taylor, we haven't found any previous reservation based on your name.
assistant
It's ok, thank you for the information.
user
Thanks for reaching us.
assistant