Hi.
Hello, how can I assist you?
I am Edward Hall.
Thanks for providing your name.
Actually I have planned to attend the client meeting but due to some technical  issues the meeting has been postponed. Could you please help me in changing the reservation?
Ok. I am here to help you, Please wait a moment.
Sure.
Sorry to inform you that there is no reservation found on your name.
No issues, thank you for your valuable time which you have spent for me.
Thanks for reaching us and have a nice day.