Hello.
user
Hello. How can I help you?
assistant
I want to change my existing reservation, as my exams have postponed. Can you please help me out?
user
Sure, can you please tell your name to check your reservation details?
assistant
Yes, I am Kevin Martinez.
user
Sorry, there is no reservation found by your name.
assistant
Ok, no problem. Thank you for your information.
user
Thank you and have a nice day.
assistant