Luke and Mara
"Well you were here and you don't remember. I heard that sometimes people leave and come back and remember but some don't. I guess you're on of the ones who doesn't." In a way, Mara was a little relieved. At least they could get to know each other without any preconceived notions. Or him remembering anything she might have let slip although she was sure she hadn't.
"Yeah, that's where I live," she said. "What about you? Where do you come from?" Keep the subject on him, that was the way to handle this. Draw him out and hope he didn't get curious enough to ask her anything personal.