Parse this person name:

Hans-Herbert Sager (1940-1982, flourished 1964-1977)
user
first_name: Hans-Herbert
last_name: Sager
middle_names: []
temporal:
- start: 1940
  end: 1982
  type: life_span
- start: 1964
  end: 1977
  type: flourished
titles: []
extra_info: []
assistant