Hi Juste, I am Ari, We are looking to build a bot to handle OTRS tickets raised by our customers for support service, we want to provide a self-service solution for basic and frequent tickets. if new or complex tickets are raised we have add it to our KB and forward call to our service engineer, and iteratively improve the bot, when next time the same ticket arise the bot have to handle it. How RASA can help me for developing this bot.