Has anyone tried using AI Chatbots/Agents on their e-commerce site? Whats your experience with it?

Has anyone here tried using AI chatbots or agents for support and sales on their website? If you have whats your experience with it? And if not why not?

Full disclosure, Im trying to get into the field of developing such ai tools for e-commerce brands and companies and want to know if there's in fact a need for something like this. So any experience on this or even tell me why you aren't using something like this, would help. Thanks in advance!