Parse this person name:

Richard Étienne (1781-1845, flourished 1804-1829)
user
first_name: Richard
last_name: Étienne
middle_names: []
temporal:
- start: 1781
  end: 1845
  type: life_span
- start: 1804
  end: 1829
  type: flourished
titles: []
extra_info: []
assistant