Hello.
user
Hello, how can I help you today?
assistant
I am very happy to change my existing reservation because my examination was postponed, now I have much time to prepare for the exam. So please help me in modifying my recent reservation.
user
Sure, can I know your name please?
assistant
Steven Miller here.
user
Sorry Steven, there is no reservation found with your name in our records.
assistant
It's ok. Thanks for your checking.
user
It's our pleasure.
assistant