Hello,.
Hello, How can I assist you?
I want to change my existing reservation, so can you help me with that?
OK, may I know your good name please?
Yes, you can call me as Nancy Taylor.
OK, Please wait for some time I will check and get back to you.
OK.
Thank you for waiting. There is no reservation found based on your name.
OK, thank you for your information.
Thank you. Have a nice day.