Parse this person name:

Dawn Miller, 1224-1285, flourished 1252-1277
user
first_name: Dawn
last_name: Miller
middle_names: []
temporal:
- start: 1224
  end: 1285
  type: life_span
- start: 1252
  end: 1277
  type: flourished
titles: []
extra_info: []
assistant