Hi. I am James Miller.
user
Hello, may I know how best I can help you today?
assistant
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?
user
 Please wait for some time, I will check with your existing reservation status.
assistant
Ok, take your time.
user
We hardly tried to find your reservation but, no reservation has been found with your name.
assistant
That's ok. Thank you for the response.
user
Thank you for reaching us with a query.
assistant