I remember the first time American movie people ceased to talk like movie people and began to talk like normal people. I was back on holiday (vacation) from the U.S. and went to watch 'The Wedding Singer' in the cinema (theatre). And then I realised that Drew Barrymore and Adam Sandler and company were speaking just like regular (normal) folks.

They don't have a particular way of talking in the movies. That's just the way American people talk!