Parse this person name:

Constance Sauvage, 1400-1440, flourished 1417-1435
user
first_name: Constance
last_name: Sauvage
middle_names: []
temporal:
- start: 1400
  end: 1440
  type: life_span
- start: 1417
  end: 1435
  type: flourished
titles: []
extra_info: []
assistant