Parse this person name:

David Lejeune (1224-1264, flourished 1250-1259)
user
first_name: David
last_name: Lejeune
middle_names: []
temporal:
- start: 1224
  end: 1264
  type: life_span
- start: 1250
  end: 1259
  type: flourished
titles: []
extra_info: []
assistant