Hello, James Thompson here.
user
Hello, how can I assist you?
assistant
 Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?
user
Sure, please wait a moment.
assistant
Ok.
user
Sorry, there is no reservation found on your name.
assistant
Ok, not a problem.
user
Thank you for choosing us.
assistant
Thank you.
user