Hi, I am Elizabeth Roberts.
user
Hello, how may I assist you today?
assistant
I need to change my recent reservation  due to  postpone of my exams.
user
Please wait a moment, I will check and get back to you.
assistant
Sure.
user
Thanks for waiting, unfortunately there is no reservation on your name.
assistant
Thank you for your valuable information.
user
Thank you choosing us. Have a nice day.
assistant
Thank you for your service.
user