Parse this person name:

Christopher Fischer, 1599-1654, flourished 1620-1644
user
first_name: Christopher
last_name: Fischer
middle_names: []
temporal:
- start: 1599
  end: 1654
  type: life_span
- start: 1620
  end: 1644
  type: flourished
titles: []
extra_info: []
assistant