Hello.
Hello, how can I help you today?
 I want to change my destination airport code in my existing reservation, can you please help me out?
Sure, may I know your good name?
My name is Angela Adams.
Please wait for a moment.
Ok, I will wait for your response.
Sorry to say that, no reservation was found with your good name.
That's ok, thank you for checking.
Thank you for reaching us.