Parse this person name:

Helmtrud Seifert (1274-1344, flourished 1298-1328)
user
first_name: Helmtrud
last_name: Seifert
middle_names: []
temporal:
- start: 1274
  end: 1344
  type: life_span
- start: 1298
  end: 1328
  type: flourished
titles: []
extra_info: []
assistant