Parse this person name:

Dex François (1783-1843, flourished 1812-1832)
user
first_name: Dex
last_name: François
middle_names: []
temporal:
- start: 1783
  end: 1843
  type: life_span
- start: 1812
  end: 1832
  type: flourished
titles: []
extra_info: []
assistant