Parse this person name:

Crystal Frost (1303-1353, flourished 1326-1337)
user
first_name: Crystal
last_name: Frost
middle_names: []
temporal:
- start: 1303
  end: 1353
  type: life_span
- start: 1326
  end: 1337
  type: flourished
titles: []
extra_info: []
assistant