Parse this person name:

Étienne Riou, 1278-1358, flourished 1304-1324
user
first_name: Étienne
last_name: Riou
middle_names: []
temporal:
- start: 1278
  end: 1358
  type: life_span
- start: 1304
  end: 1324
  type: flourished
titles: []
extra_info: []
assistant