Hello.
Hello, how may I help you?
Due to some urgent meeting, I am going to cancel my reservation. Can you please help me for this?
Sure, please share your good name?
Myself Timothy Walker.
Please wait for a while.
Sure, I will wait  for your response.
Thank you for your time, sorry no reservation found on your name.
Not a big deal. anyhow thank you very much for your service.
Thank you for choosing us.