Parse this person name:

Roberta Acosta (1255-1311, flourished 1276-1294)
user
first_name: Roberta
last_name: Acosta
middle_names: []
temporal:
- start: 1255
  end: 1311
  type: life_span
- start: 1276
  end: 1294
  type: flourished
titles: []
extra_info: []
assistant