IntroductionChatbots, (a.k.a. Conversational Agents, a.k.a. Dialog Systems, a.k.a. Virtual Assistants) are the new apps, they are omnipresent and everyone wants its own. Nevertheless, regardless of the different approaches followed to build chatbots, one feature is common to all of them: its building process is time-consuming and it is far from being straightforward. Many applications and platform