Hello,.
Hello, How can I assist you?
I need to change my existing reservation, my family meeting got postponed. Can you help me in changing my reservation?
I can help you with that. May I know your good name?
Yes, I am Debra Clark.
Please hold on. I will revert you.
OK.
Thanks for being patient, there was no reservation  on your name.
OK, thanks for information.
Thank you for contacting us.