conversations.from: human
conversations.value: Break down this math problem: Kelsey turned 25 in 1999.  Her older sister was born 3 years before Kelsey.  It's currently 2021.  How old is Kelsey's older sister?
conversations.from: assistant
conversations.value: Kelsey turned 25 in 1999 so she was born in 1999-25 = 1974
  Kelsey's sister is older by 3 years so she was born in 1974-3 = 1971
  It's currently 2021 and Kelsey's sister was born in 1971 so she is 2021-1971 = 50 years old