In this paper we describe the semantic interpretation process of utterances in a spoken dialog system for train table inquiries. Spoken dialogs show a large set of problems in human-machine-communicationlike stops, corrections, filled pauses, non grammatical sentences, ellipses, unconnected phrases etc. In our robust approach we are able to handle a substantial amount of them. While the principles of robustness are shared in several modules, in this paper we concentrate on the aspect of robust semantic analysis and domain specific interpretation of spoken utterances. Keywords: robustness, semantic analysis, spoken dialog