Parse this person name:

Ryan Alexander, 1615-1655, flourished 1644-1650
user
first_name: Ryan
last_name: Alexander
middle_names: []
temporal:
- start: 1615
  end: 1655
  type: life_span
- start: 1644
  end: 1650
  type: flourished
titles: []
extra_info: []
assistant