Parse this person name:

William Weber (1381-1450, flourished 1398-1409)
user
first_name: William
last_name: Weber
middle_names: []
temporal:
- start: 1381
  end: 1450
  type: life_span
- start: 1398
  end: 1409
  type: flourished
titles: []
extra_info: []
assistant