Parse this person name:

Isabelle Langern, 1817-1875, flourished 1832-1842
user
first_name: Isabelle
last_name: Langern
middle_names: []
temporal:
- start: 1817
  end: 1875
  type: life_span
- start: 1832
  end: 1842
  type: flourished
titles: []
extra_info: []
assistant