Dialog systems for the control of gadgets, applications and telephone line systems witness an altitude flight especially through the apple marketing of siri. In the scope of our research projects like Benefit and Astromobile, a dialogue system primarily made for reminder functions was developed. Also, with the research project Ibi, we are developing a high-level dialogue system with usage of keyword spotting based upon HMM models and under utilization of the recognition results of google voice search, which can be transferred to various econmoic fields.