Provide the theme summaries for the following conversation: 

#Person1#: Hi Judy. Did you see this notice in the dining hall?
#Person2#: Yeah, Sam. I don't like it. I usually sit here and talk with my friends after lunch until my first class at 2:00 in the afternoon. Now we have to find someplace else to go.
#Person1#: But we have lots of other places to go. We can go to the school park.
#Person2#: That means carrying all my books.
#Person1#: But they explain this will help keep the cost of food down and we can save some extra money.

Summary: 
Judy isn't happy that she cannot sit in the dining hall after lunch, but Sam thinks it can help save some money.