Hello.
user
Hello.
assistant
Owing to an emergency I had to request you to cancel my reservation. Can you help me?
user
Ok. I am here to help you. Please mention your name, I will check with the reservation list.
assistant
My name is Margaret Johnson.
user
Ok. Please wait.
assistant
Ok.
user
Thanks for your time, but no reservation  is existed earlier to proceed further.
assistant
No worries, thank you for your information.
user
Thank you for choosing us.
assistant