conversations.from: human
conversations.value: Tim and Donna will celebrate their 20th wedding anniversary in 2025.  They started dating 3 years before they got married and met 2 years before that.  When did they meet?
conversations.from: assistant
conversations.value: They'll celebrate their 20th wedding anniversary in 2025 which means they got married in 2025-20 = 2005
  They started dating 3 years before they got married in 2005 which means they started dating in 2005-3 = 2002
  And they met 2 years before they started dating which means they met in 2002-2 = 2000