Hello there. I was also looking for the same software but eventually i could not find it. Then i came across this great website called www.speechtotextservice.com
They don't use any kind of software for transcription in fact they have hired very professional transcribers.Great Service. I have been looking around for speech to text software for past three months unless i somehow looked in their website and read about their service. It was really nice doing business with them. I am surprised that they are providing a high quality work with low amount of price. Will definitely look forward to do more business with them. I would suggest you all to at least look at their samples and they also offer free trial so you can check the quality first.