Parse this person name:

Christy Ferguson (1833-1906, flourished 1850-1868)
user
first_name: Christy
last_name: Ferguson
middle_names: []
temporal:
- start: 1833
  end: 1906
  type: life_span
- start: 1850
  end: 1868
  type: flourished
titles: []
extra_info: []
assistant