That's all you can say? 'Sure'? [Though from her own watery smile and laugh, Booker can probably tell that Elizabeth is teasing him. She's happy, at the very least, if not doing exactly what Booker her warned her against: playing scenarios of what could have been.]

I don't... know how to be anyone's daughter though. Is it like how we were in Columbia? Looking after each other? More Sunday picnics? [She flashes a wry smile.]