Parse this person name:

Crystal Sanchez (1837-1884, flourished 1863-1879)
user
first_name: Crystal
last_name: Sanchez
middle_names: []
temporal:
- start: 1837
  end: 1884
  type: life_span
- start: 1863
  end: 1879
  type: flourished
titles: []
extra_info: []
assistant