TTS-synthesis of neutral style Greek with good intelligibility and quality has been achieved some time ago. As a further step towards expanding the applications domain of the TTS-system developed in our laboratory, the incorporation of emphasis into speech used in man-machine dialogues according to their context has been studied recently. In this paper the method applied for the analysis of intonation patterns, the results of this analysis, the algorithm established for the creation of desired intonation patterns and its implementation in the existing TTS-system for Greek is reported.