Hi.
Hello, how may I aid you today?
Owing an emergency want to cancel my reservation, can you help me with it please?
Sure, I am here to help you with this. May I know your name please?
Thank you.
Ok, please wait for a mean while.
My name is Justin Smith. Ok, take your time.
Sorry Smith, there is no reservation found as per your name to cancel it.
  That's ok, thank you for the response.
You are welcome.