Provide the theme summaries for the following conversation: 

Julie: i went to the library to get that book on colonial history and didn't find it
Mark: did you go to the bookstore across the store?
Julie: i don't want to buy it, i want to borrow it from the library
Julie: but they don't have it either
Mark: what about neighboring universities?
Julie: no luck
Mark: i can lend you mine
Julie: YOU'VE HAD IT ALL THIS TIME AND I DIDN'T KNOW?!?!?!
Mark: i thought you know
Julie: yes! i need to borrow it, i have a test on wednesday and need to read it
Mark: ok let's meet later today and i'll give it to you
Julie: sounds good

Summary: 
Mark can lend Julie the book on colonial history that she was looking for in the library and at the bookstore. They'll meet today and he'll give it to her. 