What are the criteria for adopting a successful chatbot?

What are the criteria for adopting a successful chatbot?

While the idea of conversing with a machine might have seemed surprising or even absurd a few years ago, today this practice has become fully democratized at work and at home. However, not all chatbots are created equal, and not only because of the artificial intelligence bricks that make them up. So what are the criteria for adopting your chatbot?
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