2011 PC Member: IJCNLP 2011 PC Member: SemDial 2011 (Los Angelogue) PC Member: SIGdial 2011 PC Member: ACL 2011 PC Member: IWCS 2011 Reviewer for the 18th Amsterdam Colloquium Reviewer for the International Journal on Artificial Intelligence Tools (IJAIT) Managing Editor of Dialogue & Discourse Co-President of the SemDial Board overseeing the SemDial Workshop Series 2010 Technical programme co-chair of SIGdial 2010 PC Member: ACL 2010 PC Member: SemDial 2010 (PozDial) PC Member: Workshop on Theories of Information Dynamics and Interaction and their Application to Dialogue Member of the advisory committee and invited panelist at the Young Researchers' Roundtable on Spoken Dialogue Systems Comentator at PALMYR 2010 Visiting Fellow of the Dialogue Systems Group at City University of Hong Kong (March 2010) Managing Editor of Dialogue & Discourse Co-President of the SemDial Board overseeing the SemDial Workshop Series 2009 Reviewer for ACL 2009 Reviewer for EACL 2009 Reviewer for EACL 2009 Student Workshop PC Member: SemDial'09 (DiaHolmia) PC Member: SRSL'09 Managing Editor of Dialogue & Discourse Reviewer for Natural Language Engineering Editor-in-Chief of Dialogue & Discourse (January-April) Co-President of the SemDial Board overseeing the SemDial Workshop Series 2008 Reviewer for EMNLP 2008 PC Member: SIGDial 2008 PC Member: SemDial'08 (LONDIAL) Reviewer for Journal of Semantics Reviewer for IEEE Transactions on Audio, Speech and Language Processing Course on Computational Dialogue Modelling taught at ESSLLI 2008 Co-President of the SemDial Board overseeing the SemDial Workshop Series 2007 PC Member: SemDial'07 (Decalog) PC Member: SRSL'07 Reviewer for Journal of Logic, Language and Information Reviewer for THEORIA. An International Journal for Theory, History and Foundations of Science Member of the SemDial Board overseeing the SemDial Workshop Series 2006 Co-chair of Programme and Organising Commmittees of SemDial'06 (brandial) PC Member: ESSLLI 2006 Workshop on Coherence in Generation and Dialogue 2005 PC Member: SemDial'05 (Dialor)