Parse this person name:

Siegfried Beier, 1356-1401, flourished 1383-1396
user
first_name: Siegfried
last_name: Beier
middle_names: []
temporal:
- start: 1356
  end: 1401
  type: life_span
- start: 1383
  end: 1396
  type: flourished
titles: []
extra_info: []
assistant