I used Siri to train myself, becoming more fluent with the things I want it to do. It was kinda like recording myself. My approach was to calm my self before using it, preparing what I wanted to say and then try. Took a while and many failures because of pauses being to long to get my stuff said, when hanging on some damn syllable. Really hard were creating calendar entries, because the sentences would vary in words. Creating timers and alarms were the first things that became better over time. I guess really wanting to feel like a Star Trek Captain talking to his ship, motivated me over months to try talking to Siri and giving it commands.