Hello.
Hello. Help me with your name please?
I am Sharon Carter.
Sharon Carter, in what way can I aid you for the day?
I want to change my existing reservation due to some budget issues on the price of the ticket. Can  you help me with it?
Sure, I am perky to help you.
Thank you.
Thanks for waiting.
Ok.
No reservation was found with your name to change. Thank you for picking us.
It's ok, thank you.
Have a great day.