Parse this person name:

Isaac Bertin (1428-1494, flourished 1447-1475)
user
first_name: Isaac
last_name: Bertin
middle_names: []
temporal:
- start: 1428
  end: 1494
  type: life_span
- start: 1447
  end: 1475
  type: flourished
titles: []
extra_info: []
assistant