Hi. I am Paul Brown.
Hello, how can I assist you today?
 I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you help me in changing reservation?
Sure, we are here to help you to change your reservation.
Thank you.
Please wait for a while, to check the status of your reservation.
Sure, take your time.
Thanks for waiting, there was no reservation found on your name.
Ok, not an issue. Thank you for your kind information.
Thank you for availing our service.