Hi.
user
Hello, how may I assist you?
assistant
 I need to change my existing reservation as my exams got postponed, Can you please help me with that?
user
Sure, we are happy to help you. Can you please let me know your good name?
assistant
Virginia Parker here.
user
Sorry, there is no active reservation on your name in our records.
assistant
No problem, thanks for the information.
user
Thank you for choosing us.
assistant