Parse this person name:

Natalie Köster (1795-1862, flourished 1825-1843)
user
first_name: Natalie
last_name: Köster
middle_names: []
temporal:
- start: 1795
  end: 1862
  type: life_span
- start: 1825
  end: 1843
  type: flourished
titles: []
extra_info: []
assistant