Parse this person name:

Sandra Robertson, 1345-1410, flourished 1367-1381
user
first_name: Sandra
last_name: Robertson
middle_names: []
temporal:
- start: 1345
  end: 1410
  type: life_span
- start: 1367
  end: 1381
  type: flourished
titles: []
extra_info: []
assistant