Parse this person name:

Robert Bertin, 1721-1799, flourished 1746-1773
user
first_name: Robert
last_name: Bertin
middle_names: []
temporal:
- start: 1721
  end: 1799
  type: life_span
- start: 1746
  end: 1773
  type: flourished
titles: []
extra_info: []
assistant