Parse this person name:

Balthasar Kramer, 1776-1828, flourished 1792-1819
user
first_name: Balthasar
last_name: Kramer
middle_names: []
temporal:
- start: 1776
  end: 1828
  type: life_span
- start: 1792
  end: 1819
  type: flourished
titles: []
extra_info: []
assistant