Parse this person name:

Alex Boyer (1429-1473, flourished 1456-1468)
user
first_name: Alex
last_name: Boyer
middle_names: []
temporal:
- start: 1429
  end: 1473
  type: life_span
- start: 1456
  end: 1468
  type: flourished
titles: []
extra_info: []
assistant