Parse this person name:

David Richards, 1742-1794, flourished 1760-1789
user
first_name: David
last_name: Richards
middle_names: []
temporal:
- start: 1742
  end: 1794
  type: life_span
- start: 1760
  end: 1789
  type: flourished
titles: []
extra_info: []
assistant