Hi.
user
Hello.
assistant
I am Helen Parker.
user
 How can I help you ?
assistant
Owing to an emergency, I need to cancel my business meeting. Can you please cancel my reservation?
user
Sure, please wait I will revert you in  a moment.
assistant
Ok.
user
 Sorry, no reservation was found on your name.
assistant
Ok, no problem. Thank you.
user
Thank you for availing us.
assistant