Parse this person name:

Berend Aertsz (1343-1404, flourished 1361-1379)
user
first_name: Berend
last_name: Aertsz
middle_names: []
temporal:
- start: 1343
  end: 1404
  type: life_span
- start: 1361
  end: 1379
  type: flourished
titles: []
extra_info: []
assistant