Parse this person name:

Steven Harloff, 1921-1979, flourished 1939-1964
user
first_name: Steven
last_name: Harloff
middle_names: []
temporal:
- start: 1921
  end: 1979
  type: life_span
- start: 1939
  end: 1964
  type: flourished
titles: []
extra_info: []
assistant