input: Write a python function to sort a list of names in alphabetical order.
  assert sort_names(['John', 'Alice', 'Bob', 'Charlie']) == ['Alice', 'Bob', 'Charlie', 'John']
  assert sort_names(['Zoe', 'Alex', 'Emma', 'Brian']) == ['Alex', 'Brian', 'Emma', 'Zoe']
  assert sort_names(['Sam', 'Anna', 'Mike', 'Sophie']) == ['Anna', 'Mike', 'Sam', 'Sophie']
output: def sort_names(names):
      return sorted(names)