Parse this person name:

Roger Morgan (1779-1823, flourished 1805-1818)
user
first_name: Roger
last_name: Morgan
middle_names: []
temporal:
- start: 1779
  end: 1823
  type: life_span
- start: 1805
  end: 1818
  type: flourished
titles: []
extra_info: []
assistant