conversations.from: human
conversations.value: Please show me the solution for: Lance wants to finish reading a 100 page book in 3 days. Yesterday, he started to read 35 pages. Today, he read 5 fewer pages than yesterday. How many pages should he read tomorrow to finish the book?
conversations.from: assistant
conversations.value: Lance read 35 - 5 = 30 pages today.
  So he read a total of 35 + 30 = 65 pages in 2 days.
  Thus, he should read 100 - 65 = 35 pages tomorrow.