Hello.
user
Hello. How may I assist you today?
assistant
I am Edward Turner want to change  my reservation due to prepone of my exams. Can you help me in changing?
user
Sure, please wait for a while, I will check the active reservation on your name and revert to you.
assistant
Ok.
user
Thank you for waiting, currently there is no active reservation found on your name.
assistant
Ok , no problem. Thank you for your response.
user
Thank you for reaching us, have a good day.
assistant