Parse this person name:

William Pratt (1842-1893, flourished 1859-1886)
user
first_name: William
last_name: Pratt
middle_names: []
temporal:
- start: 1842
  end: 1893
  type: life_span
- start: 1859
  end: 1886
  type: flourished
titles: []
extra_info: []
assistant