I'm not a big fan of Haray Caray's steaks, but their lunch menu is good.

For future reference, if you're on a work trip and stuck at O'Hare overnight:

1. Cafe La Cave is old school atmosphere and "continental" menu, but well-executed. It's a few blocks north of Higgins on Manheim
2. Zia's is in Edison Park (about a $7 cab ride). That's where I used to take people when I lived in Elmhurst and got "hey, I'm stranded at O'Hare tonight, what are you up to" calls from co-workers.