Parse this person name:

Gretchen Barth, 1782-1862, flourished 1800-1818
user
first_name: Gretchen
last_name: Barth
middle_names: []
temporal:
- start: 1782
  end: 1862
  type: life_span
- start: 1800
  end: 1818
  type: flourished
titles: []
extra_info: []
assistant