The short answer
A process is a good candidate for AI if it happens often, goes roughly the same way every time, the information is already digital and there are examples of good work. The cheaper a mistake is to fix, the more you can let AI do.
Think of answering customer questions, processing invoices and requests, writing product copy, compiling reports and checking documents against fixed rules.
Less suitable: work where original creativity is the core, where someone has to be physically present, or where a person is personally accountable for the outcome. AI can help there, but the human stays in charge.