Hello.
user
Hello, how may I assist you?
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, please help me with your name to check your reservation details.
assistant
Please check with the name Sandra Hall.
user
Sorry, no reservation is found on your name.
assistant
It's ok. Thank you for the information.
user
Thank you for choosing us, have a nice day.
assistant