Dustin Hoffman and Emma Thompson. What more do you need? In this romantic comedy for adults (instead of the Generation Y antics of He’s Just Not That Into You) two older folks find Real Love. The plot is totally conventional and is not up to the Star Power of Hoffman and Thompson. It would have been nice if the script had given Hoffman and Thompson some challenges. But in this frequently mawkish genre, Last Chance Harvey projects genuine warmth. GRADE: B