Hi. I am James Miller.
Hello, may I know how best I can help you today?
Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me with it please?
 Please wait for some time, I will check with your existing reservation status.
Ok, take your time.
We hardly tried to find your reservation but, no reservation has been found with your name.
That's ok. Thank you for the response.
Thank you for reaching us with a query.