Hi,.
Hello, how can I assist you?
I need to change my existing reservation.
Sure, may I know your good name please?
I am Dorothy Smith.
Thanks for giving your name, please wait for a while I will check the availability and revert you.
OK,.
Thank you for waiting, sorry to inform you that there is no reservation found on your user name.
OK, Thank you for your help.
Thank you for contacting us, have a great day.