Parse this person name:

Robert Walton (1351-1407, flourished 1368-1395)
user
first_name: Robert
last_name: Walton
middle_names: []
temporal:
- start: 1351
  end: 1407
  type: life_span
- start: 1368
  end: 1395
  type: flourished
titles: []
extra_info: []
assistant