Parse this person name:

Crystal Lewis (1802-1847, flourished 1819-1842)
user
first_name: Crystal
last_name: Lewis
middle_names: []
temporal:
- start: 1802
  end: 1847
  type: life_span
- start: 1819
  end: 1842
  type: flourished
titles: []
extra_info: []
assistant