Parse this person name:

Barbara Johnson (1728-1771, flourished 1750-1766)
user
first_name: Barbara
last_name: Johnson
middle_names: []
temporal:
- start: 1728
  end: 1771
  type: life_span
- start: 1750
  end: 1766
  type: flourished
titles: []
extra_info: []
assistant