Parse this person name:

David Bertrand, 1679-1759, flourished 1705-1726
user
first_name: David
last_name: Bertrand
middle_names: []
temporal:
- start: 1679
  end: 1759
  type: life_span
- start: 1705
  end: 1726
  type: flourished
titles: []
extra_info: []
assistant