I did download an office assistant once that did have a male voice.
Believe me, it was horrendous. Every syllable of every word was enunciated. The poor chap lasted about a week. I would like an office assistant that sounds like a human being, not a robot. There is an app out there called Andy, but I don't know if I want to pay for something that might actually sound like Andee. Do you know what I mean? I think office assistant app companies are missing the boat on this one. Let's be honest, who's voice would rather hear as your office assistant? Thelma... or Thor?