Parse this person name:

Alejandro Frost, 1515-1555, flourished 1544-1550
user
first_name: Alejandro
last_name: Frost
middle_names: []
temporal:
- start: 1515
  end: 1555
  type: life_span
- start: 1544
  end: 1550
  type: flourished
titles: []
extra_info: []
assistant