Hi. I am Larry Brown.
user
Hello, how can I aid you?
assistant
Due to emergency I need to cancel my recent reservation, Can you please help me with that?
user
 Ok, please wait I will revert you.
assistant
Sure.
user
 Sorry, no reservation was found on your name.
assistant
Ok, no problem at all. Thanks for your information.
user
 Thank you for availing us.
assistant