Hello.
user
Hello, how may I assist you?
assistant
 I am Jessica Hill want to change my reservation due to prepone of my exams.
user
Ok.
assistant
 Can you help me in changing?
user
Sure, I am here to assist you. Please wait for a while.
assistant
Ok.
user
Thanks for your time, there is no active reservation made in your name to change.
assistant
Ok, thank you for your response.
user
Thank you for choosing us, have a good day.
assistant