Hi @prasgaut. As of now we don’t have a pre-made connector for Slack, however we had quite a few people in our community looking into integrating Rasa with Skype for Business. I hope this thread can be helpful for you.
Overall, your idea of connecting Rasa to Skype seems good to me. You could try building a custom connector for the integration between Rasa and Skype. If you do, that could be a very nice contribution to Rasa Open Source.