Hi.
user
Hello. How can I help you?
assistant
 I need to change my existing reservation as my exams got postponed, Can you please help me with that?
user
Can I know your name?
assistant
Robert Turner here.
user
Let me check status with your recent reservation.
assistant
Sure.
user
Sorry, there is no reservation by name Robert Turner.
assistant
No issue, thanks for the information.
user
Thank you.
assistant