Parse this person name:

Elizabeth Knoers, 1778-1839, flourished 1807-1821
user
first_name: Elizabeth
last_name: Knoers
middle_names: []
temporal:
- start: 1778
  end: 1839
  type: life_span
- start: 1807
  end: 1821
  type: flourished
titles: []
extra_info: []
assistant