Hello how may I help you? Can you delete an appointment for me? Yes, which appointment? The one next tuesday at 2:00 Alright. But, before I delete it, I should remind you that you can't undo this action. Are you sure you want to proceed? Yes please erase it. Okay, it's been erased. Could you also create a new appointment for next friday at 4 pm I've created the new appointment. Thanks You are welcome. Have a nice day.