Hello.
user
Hello. How can I help you?
assistant
I want to change my existing reservation, as my exams got postponed suddenly. Can you please help me to change?
user
Can you please provide the name on which the reservation is confirmed?
assistant
Rebecca Edwards.
user
Sorry, there is no reservation found by the name that you have provided.
assistant
Ok, no problem.
user
Thank you and have a nice day.
assistant