The first thing I do when a phone operator robot asks me to say "English" for English or "Espanol" for Espanol, I push all the buttons to see if I can get to a number-based menu, or at least hurt the robot's ears. Saying "English" and waiting for it to confirm that I said English is not faster or more convenient than hitting 1. It's not scary, but it's a computer, and I'm not going to pretend it's not.
Saying, "Open a command prompt," is in no way more convenient, faster, or easier than slamming the mouse to the lower left, clicking, and typing cmd.exe. Having it say, "OK, here's a command prompt," afterward would just be annoying.
Maybe I'm just not picturing the right use case.