Parse this person name:

Crystal Johnson, 1432-1501, flourished 1456-1478
user
first_name: Crystal
last_name: Johnson
middle_names: []
temporal:
- start: 1432
  end: 1501
  type: life_span
- start: 1456
  end: 1478
  type: flourished
titles: []
extra_info: []
assistant