Build simple mac speech recognition software

I need a simple speech recognition that works on Mac OS, the UI needs to look like this: [login to view URL] "good evening michael" needs to be a string that the TTS responds, the speech recognition program needs to have TTS and a few commands I have the code for TTS http response ready just need to convert it to the mac language I have it programmed in php, java and C# so i'm sure you can re do it on the mac programming language it is not difficult. the "Michael" string also needs to be a variable I can input