Parse this person name:

Stjepan Heser, 1903-1978, flourished 1924-1939
user
first_name: Stjepan
last_name: Heser
middle_names: []
temporal:
- start: 1903
  end: 1978
  type: life_span
- start: 1924
  end: 1939
  type: flourished
titles: []
extra_info: []
assistant