Hello.
Hello, how  can I help you today?
I want to change my existing reservation. Could you help me with that?
Sure, we are here to help you. May I know your name further process?
Pamela Adams.
Ok, wait for some time I will check the reservations on your name and get back to you.
OK.
Thanks for waiting there is no reservation found on your name.
That's ok, no problem. Thank you.
Thanks for contacting us.