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In the paper we first present the architecture of the Slovenian spoken dialog system. The Slovenian spoken dialog system was developed within the joint project in multilingual speech recognition and understanding Spoken Queries in European Languages (SQEL- Copernicus-1634). Such a system can handle spontaneous speech, and provide the user with correct information in the domain of air flight information retrieval. The architecture of the Slovenian system is based on the Erlangen Train Time Table Inquiry System, developed within the European Esprit project Sundial. The major modules perform word recognition, linguistic analysis, dialog management and speech synthesis. We further describe experiments we have performed using different dialog strategies in the system - user conversations over the microphone and telephone. In the paper we describe the different dialog strategies and show some examples. We present the modules of the Slovenian spoken information system in more detail and show some results with respect to word accuracy, semantic accuracy and dialog success rate for different dialog strategies.