Parse this person name:

Jason Vaessen, 1815-1877, flourished 1840-1868
user
first_name: Jason
last_name: Vaessen
middle_names: []
temporal:
- start: 1815
  end: 1877
  type: life_span
- start: 1840
  end: 1868
  type: flourished
titles: []
extra_info: []
assistant