Parse this person name:

Chelsea Allen-Dunn (1905-1959, flourished 1931-1950)
user
first_name: Chelsea
last_name: Allen-Dunn
middle_names: []
temporal:
- start: 1905
  end: 1959
  type: life_span
- start: 1931
  end: 1950
  type: flourished
titles: []
extra_info: []
assistant