Provide the theme summaries for the following conversation: 

Monica: Are we going to the forest tomorrow?
Elisabeth: Yes, I will take the car of my parents
Nathaniel: And everybody will prepare something for a picnic?
Monica: sure, I have a cake and some olives from my grandparents
Nathaniel: I will have pancakes
Nathaniel: the American style
Elisabeth: I am preparing a very nice surprise 
Nathaniel: good!

Summary: 
Monica, Elisabeth and Nathaniel are going to the forest tomorrow. Monica will take a cake and some olives with her. Nathaniel will bring pancakes.