Hello.
user
Hello. What can I do for you today?
assistant
 I am Stephanie Hill want to change my reservation due to prepone of my meeting. Can you help me in changing?
user
Sure, please wait for a moment, I will check and revert to you.
assistant
 Ok.
user
Thank you for your waiting, I hardly tried to find a reservation on your name, but there is no reservation on your name.
assistant
 Thank you for your help.
user
Thank you for contacting our agency.
assistant