Asking the Build Bot to tell me a joke just prompted it to say: "Sorry Nicole, I'm a BOT with a specific purpose... In short, having a conversation with these chat bots feels a little like talking to a search engine, not a person.Which makes sense because these chat bots are all single-purpose, but it does show that they have their limits.If you're looking for a more complicated answer, it's probably easier to just make a call or look up your answer on Google (or Bing, naturally).
The way you add a bot is the same way you'd add a contact; indeed, the Add Contact screen in Skype now has two categories: People and Bots.Plus once Cortana is integrated, it'll begin to feel a lot more natural. You can try this out for yourself if you download the latest Skype update for Windows, Android and i OS. For example, with the Bing Music bot, typing in "Hello" would bring up Adele's song (a link to her You Tube video, it looks like) rather than polite small talk.A "Hi" in Bing News brought up articles with the word "Hi" in it. " it responded with different lunch hours instead of what was on the menu. You might ask around or try this thing called the internet." Cheeky.
As of right now, the only Bots available to add on Skype are Bing Music, Bing News, Bing Images, Getty Images and Build Bot (which is mostly centered around the Build conference).
They're mostly in Preview mode at the moment (in other words, they're still sort of in beta), but they do appear to be functional.