Parse this person name:

John Hammond, 1206-1254, flourished 1221-1249
user
first_name: John
last_name: Hammond
middle_names: []
temporal:
- start: 1206
  end: 1254
  type: life_span
- start: 1221
  end: 1249
  type: flourished
titles: []
extra_info: []
assistant