Hi.
user
Hello, how may I help you?
assistant
Could you please change my existing reservation due to postpone of my exams?
user
Sure, please share your good name?
assistant
My name is Karen Jones.
user
Please wait for a while.
assistant
Sure.
user
Sorry, no reservation found on your given name.
assistant
Not a problem, thanks for checking.
user
Thank you for choosing us.
assistant