HI.
user
Hello, how may I aid you today from my end?
assistant
I am Richard Perez. I want to change my existing reservation due to postpone of my exams, so can you help me with this?
user
Sure, I am here to help you out. Please allow me a moment.
assistant
Sure.
user
Sorry Richard Perez, there is no active reservation on your name in our database.
assistant
No problem, thank you for the information.
user
Thank you for reaching us.
assistant