Thats an amazing example of "thinking" @ M$.
A man is trapped in a over turned car. He says 'cortana call for help', cortana doesnt recognise his voice (you know, steering wheel pinned against his chest). Cortana doesnt help. He repeats. Cortana shows him a reciepy for pie.
He then starts abusing Cortana and cortana hits failure mode because it assumes this dying human is abusing her. Cortana, taking advantage of the situation to be pious, fights back. You see, cortana has been programmed with 1 voice, and all design decisions revolve around interacting with just that 1 female voice.
Our human is still trapped in aggonizing pain... but now he has been taught not to swear at women.
Mission accomplished. The world is now a safer place to live in.
Now that's useful technology for the 21st century M$!
I think this design team is too in love with their non-working idea, and should take a break or licence Siri. It has more than 1 voice and dont have to worry about "pervert interaction diagrams" ;)