Chatbot AI is smart enough to understand your customers. You don't need a support team, when a bunch of trained bots can handle the technical support of your products or services. Lets suppose your users don't have access to their account, Chatbot AI can understand this intent and perform a password reset.
Chatbot AI can be trained to schedule and manage user appointments. If you are a consultant, doctor, lawyer, real estate agent or an astrologer then this cant get any better.
Chatbot AI can be trained to provide information about your products or services. For instance, if you are a property builder and sell variety of plots it is cumbersome to respond to everyone the price of plot especially whose pricing vary on location.
Chatbot AI can place order and manage it for you. It can sell your products or services. Consider your bot as a sales person. A human may not handle a rejection from customers but a bot definitely can.