Free English corpus data for study spoken English and dialogue turns -
http://www.ai.sri.com/~communic/amex/amex.html
SRI's Amex Travel Agent Data
For purposes of research into dialogue, particularly in the air travel domain used by the ATIS project , SRI audiotaped and transcribed conversations made at SRI International, Menlo Park, CA, between SRI International employees and American Express travel agents. The later transcripts omit portions of the tapes that were not relevant to the ATIS project, noting "[break in transcript]" where this occurs.
http://www.ai.sri.com/~communic/amex/amex.html
SRI's Amex Travel Agent Data
For purposes of research into dialogue, particularly in the air travel domain used by the ATIS project , SRI audiotaped and transcribed conversations made at SRI International, Menlo Park, CA, between SRI International employees and American Express travel agents. The later transcripts omit portions of the tapes that were not relevant to the ATIS project, noting "[break in transcript]" where this occurs.