Parse this person name:

Stefanie Townsend (1389-1454, flourished 1405-1434)
user
first_name: Stefanie
last_name: Townsend
middle_names: []
temporal:
- start: 1389
  end: 1454
  type: life_span
- start: 1405
  end: 1434
  type: flourished
titles: []
extra_info: []
assistant