 Joseph Weizenbaum 's ELIZA could carry out conversations that were so realistic that users occasionally were fooled into thinking they were communicating with a human being and not a program . But in fact , ELIZA had no idea what she was talking about . She simply gave a canned response or repeated back what was said to her , rephrasing her response with a few grammar rules . ELIZA was the first chatterbot . 
 Joseph Weizenbaum <a href='null_genetive' title='1'><mark>'s</mark></a>ELIZA could carry out conversations <a href='null_relcl' title='2'><mark>that</mark></a><a href='uninflect' title='3'><mark>were</mark></a> so realistic that users occasionally <a href='uninflect' title='4'><mark>were</mark></a> fooled into thinking they <a href='uninflect' title='5'><mark>were</mark></a> communicating with a human being and not a program . But in fact , ELIZA had no idea what she was talking about . She simply gave a canned response or repeated back what was said to her , rephrasing her response with a few grammar rules . ELIZA was the first chatterbot . 
Joseph Weizenbaum  ELIZA could carry out conversations was so realistic dat users occasionally was fooled into thinkin they was communicating with a human being and not a program . But in fact , ELIZA had no idea wht she was talkin about . She simply gave a canned response or repeated back what was said to her , rephrasing her response wid a few grammar rules . ELIZA was da first chatterbot .