Parse this person name:

Ricky Berg (1431-1497, flourished 1448-1478)
user
first_name: Ricky
last_name: Berg
middle_names: []
temporal:
- start: 1431
  end: 1497
  type: life_span
- start: 1448
  end: 1478
  type: flourished
titles: []
extra_info: []
assistant