Parse this person name:

Ronald Naser-Caspar (1254-1309, flourished 1270-1288)
user
first_name: Ronald
last_name: Naser-Caspar
middle_names: []
temporal:
- start: 1254
  end: 1309
  type: life_span
- start: 1270
  end: 1288
  type: flourished
titles: []
extra_info: []
assistant