Provide the theme summaries for the following conversation: 

#Person1#: Robbie, this new walkman is really wonderful.
#Person2#: Richard and Marilyn bought it for me for my birthday.
#Person1#: They are so kind. You are very lucky, Robbie, to have such a nice family.
#Person2#: Is something wrong, Alexandra?
#Person1#: No, nothing.
#Person2#: Yes, there is. I can tell. What's the matter? Come on, you can tell me. What's up?
#Person1#: I received a letter from my parents this morning. I miss them very much. The Molinas treat me so nicely and I like being with your family so much...but when I received the letter with photographs of my family, I cried.
#Person2#: You really miss your family,don't you?
#Person1#: Yes, I know I must seem silly. It's not like I have nobody. I like the Molinas very much, and they're so kind to me.
#Person2#: Hey, why don't we go out for a hamburger and French fries? That'll cheer you up. And you can use my walkman.
#Person1#: That's a good idea. But if you go out, please don't complain about your math teacher or your math homework, I want to have fun.

Summary: 
Alexandra thinks Robbie's new walkman is wonderful and that Robbie's family is nice, which causes Alexandra to miss her family. Robbie invites her to eat something to cheer her up.