Parse this person name:

Barbara Knight, 1204-1253, flourished 1220-1234
user
first_name: Barbara
last_name: Knight
middle_names: []
temporal:
- start: 1204
  end: 1253
  type: life_span
- start: 1220
  end: 1234
  type: flourished
titles: []
extra_info: []
assistant