Hi.
Hello. How may I assist you?
 I am having sudden meeting in my office, can you please help me changing my reservation?
Sure, may I know your name so that I can check your reservation.
Sure, my name is Brenda Wilson.
Thanks for giving your name, please hold on a moment.
Sure, take your time.
Thanks for your time, there is no reservation found on your name.
That's fine, not an issue. Thank you for your information.
It's my pleasure. Ok, thanks for consulting us.