Parse this person name:

Gitta Köster, 1387-1466, flourished 1409-1433
user
first_name: Gitta
last_name: Köster
middle_names: []
temporal:
- start: 1387
  end: 1466
  type: life_span
- start: 1409
  end: 1433
  type: flourished
titles: []
extra_info: []
assistant