I say please to my Google Home as a matter of habit and it "rewards" me by making a little twinkling sound and saying "that was a very nice way to ask " and I'm like OKAY COOL BUT CAN YOU JUST DO THE THING???
ya'll must be having a different experience with your assistants, Alexa and Cortana are no help so I am constantly saying nasty things to them WHICH THEY DO HEAR while ignoring requests, Google listens to me and does stuff but seems to take my requests at the same urgency and attention as my cat.
WhimsyWinx: Alexa is very skilled in the areas in which I employ her, namely timers, alarms, reminders. Everything else ends in "nevermind I'll ask google"