Message when an entire skill interaction is complete

I’m working on a Picroft install into a prop and I’d like to control LEDs, etc. I am using the Google AIY kit for the speaker and microphone. I found the Picroft Google AIYVoicekitSkill that does some of the interaction I am looking for. However, the LED turns off after the voice recording is done. I’d like it to stay light until the entire interaction is done. For example, if I asked it to “tell me a joke”, ideally, I’d like the LED to stay on until Mycroft finishes the joke.

I’ve been looking through the Message Types, but I’m not sure what the message is that I’m looking for. I’m new to skills (and Mycroft in general), so any help would be greatly appreciated!