A fundamental reason to use a framework to write a chat bot is so you don’t need to do it all yourself, specially, do it all over again if you want your bot running on a new channel.
However, once in a while, you might find yourself needing to do something very specific to a particular channel, maybe you want to get that receipt template rendered just the way you want to, or maybe you want to use a native functionality of Skype - whatever it might be, here’s how you could do it, when using Bot Framework.