i've seen one - my workplace briefly experimented with a chatbot for taking vacation time. you would say something like "i'm on vacation from tuesday to friday" and it would parse it, extract or convert the input to a date range, and submit a vacation request through the official tool. it would then ask if you also wanted to display your vacation status on your calendar and set up an email autoresponder, and do them for you if you answered 'yes'. i was sad when they removed the bot - i think they did it because they streamlined the website, but even with the new improved web workflow i still preferred the experience of doing it via chatbot.
This sounds interesting.
Although this use case is very infrequent. If this had a wider use case, like something used daily, that just might be be a viable product!
it was infrequent but it was really pleasant to use. it was just a frontend to the internal websites that did the same thing though, so it was more of a feature than a product.
