Hello.
Hello. How may I help you today?
I am planning to change my destination airport code in my existing reservation, can you please help me out?
Sure, I can change your reservation right now. Before that I need to know your good name please?
Sure, my name is Donald Baker.
Please wait a moment.
Ok, take your time.
 Thanks for your time, we are sorry to say that there is no active reservation found on your name.
It's ok, thank you for the information.
Thanks for opting us, wish you a great day.