Parse this person name:

Olga Letta, 1320-1368, flourished 1340-1363
user
first_name: Olga
last_name: Letta
middle_names: []
temporal:
- start: 1320
  end: 1368
  type: life_span
- start: 1340
  end: 1363
  type: flourished
titles: []
extra_info: []
assistant