I remember years ago, when speech recognition was in its infancy, an example of a conversation that would be understandable to a human being, but impossible for speech recognition in terms of contextual understanding.

She: Hungry?
He: I've got a McDonalds coupon.
She: The keys are on the table.

I think it will be quite a while before the joining of AI and speech recognition reaches the stage where a computer can understand something like that.

tanstaafl.