The chatbot we added to our B2B product is by far the most popular addition we've made this year. Our users are not tech-savvy, they use a lot of apps everyday and don't want to have to learn and keep up with just another UI. So they like being able to type their wants and needs in plain language (or speak it into their phone, if they are in the field) and get a plain language response back with embedded images and charts.
YMMV of course.