Robert: Hey, what do you want for Xmas?
Elizabeth: Don't know yet
Robert: What about the kids?
Elizabeth: Hm, I guess Tom needs a new Tshirt. Bart wants a truck. But not a big one again, ok?
Robert: ok. Let me know when you think of sth for yourself
Elizabeth: ok
Elizabeth doesn't know what she wants for Christmas, but advises Robert to buy Tom a new Tshirt, and Bart a truck. 