Seems really cool but I wonder how well it will handle a case where you want to swap a phrase for a phrase, but have the new phrase have a "human specific" emph

Seems really cool but I wonder how well it will handle a case where you want to swap a phrase for a phrase, but have the new phrase have a "human specific" emphasis or variant to it. Example: "That was a short trip" vs "That was a reaaaaaalllly long trip". Language is so much more than words. When you deliver the variant message, your whole facial expression might change. So much would get lost if that doesn't carry over. Your facial expression and tone in that context also completely changes the meaning from you enjoyed the long trip to not enjoying it, but how can a machine know which one to pick.