Parse this person name:

Nathan Smith, 1619-1674, flourished 1646-1663
user
first_name: Nathan
last_name: Smith
middle_names: []
temporal:
- start: 1619
  end: 1674
  type: life_span
- start: 1646
  end: 1663
  type: flourished
titles: []
extra_info: []
assistant