Agent York & Clark
York grinned as the man took one. He was curious about the notepad, because while it wasn't uncommon for most people, it was something he was familiar with. Wash carried one around to help him keep track of everything, so that was sort of his assumption. Still, he was polite enough to not ask about it, or even do much more than glance at it for a moment.
"They're delicious. I think one of the residents made them, or at least that's what my friend told me." Which was odd, referring to Bucky as his friend, but it was true. "Do you know one of the people celebrating their birthday today, or just checking out the gathering?" York was definitely good at just chatting with people, and if the guy was willing to take a cookie, he probably was willing to chat for a few minutes.