Parse this person name:

Berend van Amstel, 1554-1618, flourished 1584-1604
user
first_name: Berend
last_name: van Amstel
middle_names: []
temporal:
- start: 1554
  end: 1618
  type: life_span
- start: 1584
  end: 1604
  type: flourished
titles: []
extra_info: []
assistant