Parse this person name:

Eckhart Koch (1223-1299, flourished 1244-1267)
user
first_name: Eckhart
last_name: Koch
middle_names: []
temporal:
- start: 1223
  end: 1299
  type: life_span
- start: 1244
  end: 1267
  type: flourished
titles: []
extra_info: []
assistant