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. 9. The dialog supporting apparatus according to claim 7 , said apparatus further comprising a display unit, wherein: said utterance prediction unit is further operable to display the prediction utterance on said display unit; and said utterance receiving unit is further operable to receive the prediction utterance which is the utterance, when the prediction utterance is selected by one of the dialog participants.