Parse this person name:

Friedhelm Dörr, 1739-1781, flourished 1756-1768
user
first_name: Friedhelm
last_name: Dörr
middle_names: []
temporal:
- start: 1739
  end: 1781
  type: life_span
- start: 1756
  end: 1768
  type: flourished
titles: []
extra_info: []
assistant