Parse this person name:

Bernard Riou (1418-1463, flourished 1438-1458)
user
first_name: Bernard
last_name: Riou
middle_names: []
temporal:
- start: 1418
  end: 1463
  type: life_span
- start: 1438
  end: 1458
  type: flourished
titles: []
extra_info: []
assistant