Jason Williams is Principal Member of Technical Staff at AT&T Labs – Research. His research interests include spoken dialog systems, planning under uncertainty, spoken language understanding, and speech recognition. He is on the Scientific Committee of SigDial (the Special Interest Group on Dialog and Discourse), is an elected member of the IEEE Speech and Language Technical Committee (SLTC), and is on the board of directors of the Association for Voice Interaction Design (AVIxD). Jason holds a PhD and Masters in Speech and Language Processing from Cambridge University (UK), and a BSE in Electrical Engineering from Princeton University (USA). Before joining AT&T Labs, he held positions in industry where he built spoken dialog systems which have since fielded millions of phone calls.