This volume documents the busy development in the field of research on dialogue. All 18 papers collected here are a selection from the 30 papers that were presented at the BI-DIALOG workshop. Grouped thematically, they contain changes from the original proceedings.

1. Perspectives on dialogue in the New Millennium (by Kuhnlein, Peter); 2. Imperatives in dialogue (by Lascarides, Alex); 3. Integrating conversational move types in the grammar of conversation (by Ginzburg, Jonathan); 4. An HPSG-based representation model for illocutionary acts in crisis talk (by Sassen, Claudia); 5. Denial and presupposition (by Sandt, Rob van der); 6. Between binding and accommodation (by Spenader, Jennifer K.); 7. Theories of presuppositions and presuppositional clitics (by Capone, Alessandro); 8. Semantic meaning and four types of speech act (by Oishi, Etsuko); 9. Generalised and particularised implicatures of linguistic politeness (by Terkourafi, Marina); 10. Models of intentions in language (by Mann, William C.); 11. Context-dependent interpretation and implicit dialogue acts (by Kreutel, Jorn); 12. Notes on analysing context (by Fischer, Kerstin); 13. A basic system for multimodal robot instruction (by Knoll, Alois); 14. An information state approach in a multi-modal dialogue system for human-robot conversation (by Lemon, Oliver); 15. Dialogue understanding in dynamic domains (by Ludwig, Bernd); 16. An information state update approach to collaborative negotiation (by Cooper, Robin); 17. Resolving Underspecification using Discourse Information (by Schlangen, David); 18. On coordinating interpretations - optimality and rational interaction (by Benz, Anton); 19. Modal particles and the common ground: Meaning and functions of German ja, doch, eben/halt and auch (by Karagjosova, Elena); 20. (Non-)Temporal concepts conveyed by before, after, and then in dialogue (by Tenbrink, Thora); 21. Name index; 22. Subject index