[jerf]

Nobody would use a system that interrogated you on every fifth word. That would actually be a step worse than silent failure on every fifth word.

[fauigerzigerk]

It shouldn't interrupt you once every 5 words of course. What it should try to do is to create a model of what you meant to say. At some point, if the system is unsure, it should ask you to confirm or correct what it has understood so far.