7. The dialog supporting apparatus according to claim 1 , further comprising: an utterance receiving unit operable to receive an utterance of one of the dialog participants; an utterance processing unit operable to transform the utterance received by said utterance receiving unit into another utterance form; and an utterance outputting unit operable to output the utterance of the other utterance form transformed by said utterance processing unit.
7. The dialog supporting apparatus according to claim 1 , further comprising: an utterance receiving unit operable to receive an utterance of one of the dialog participants; an utterance processing unit operable to transform the utterance received by said utterance receiving unit into another utterance form; and an utterance outputting unit operable to output the utterance of the other utterance form transformed by said utterance processing unit. 10. The dialog supporting apparatus according to claim 7 , said apparatus further comprising a display unit, wherein said utterance prediction unit is further operable to predict a development of utterances made by the dialog participants in the dialog, based on the dialog history selected by said dialog history selection unit, and is further operable to display the predicted development of the utterances on said display unit.