Hi.
user
Hello,. How can I assist you today?
assistant
Can you change my existing reservation? because  my exams are postponed due to heavy snow fall.
user
Let me know your name for changing your reservation?
assistant
I am Jerry Turner.
user
Thanks for providing your name. There is no reservation exist on your name.
assistant
Ok.
user
Thank you for opting us. Have a cheerful day!.
assistant
Thank you.
user