We're way closer than me just answering with the obligatory "fine" response, so generally I elaborate with something like, "Well, it's 7:30 and I'm already going to work..." We're so close he can read between the lines on unspecific responses.
As I walk back to my car I feel a little bit more supported than pre-coffee me. As if someone really does care if I have a good day! And then I realize that wow, customer service really works. Just because one guy takes the time to act happy I'm in his store, I continue to buy crappy coffee. Whatever. It's a good system and worth the $4.68 I spend a week for a little morale boost. We all could use a little of that.