Dan Gilroy wrote The Bourne LegacyThe Bourne Legacy is written by Tony GilroyTony Gilroy wrote The Bourne Supremacy
[Human]: Could you recommend some Dan Gilroy movies for me? [Assistant]: Yes, Dan Gilroy wrote The Bourne Legacy and  directed Nightcrawler. [Human]: Oh, I liked the Bourne movies do you know the names of the other ones? 
Tony Gilroy, wrote The Bourne Identity and The Bourne Supremacy.