Parse this person name:

Roger Lesage, 1931-2003, flourished 1955-1973
user
first_name: Roger
last_name: Lesage
middle_names: []
temporal:
- start: 1931
  end: 2003
  type: life_span
- start: 1955
  end: 1973
  type: flourished
titles: []
extra_info: []
assistant