I got a call two years ago from a telemarketer that kept asking me yes/no questions with a robot voice and didn't leave me any space in the conversation to say anything. I really felt like I was talking to a computer so I tried to Turing-test him by forcing him to answer an open-ended question. It took two minutes, and the caller turned out to be human after all. That wasn't very relieving though. Humans should not speak with such zombified voice.