Hello, I am Alexander Green.
user
Hello, how can I aid you Green?
assistant
I want to change my existing reservation due to postpone of my exams. Could you please help me?
user
Sure, please wait for a while.
assistant
Sure.
user
Sorry Alexander Green, no reservation found on your name in our list.
assistant
No worries, thank you for the information.
user
Thank you for approaching us, have a great day.
assistant