Parse this person name:

Heather Shepard, 1379-1421, flourished 1397-1411
user
first_name: Heather
last_name: Shepard
middle_names: []
temporal:
- start: 1379
  end: 1421
  type: life_span
- start: 1397
  end: 1411
  type: flourished
titles: []
extra_info: []
assistant