input: Write a function to sort a given list of names alphabetically. If the input list is empty, return an empty list.
  assert sort_names(["John", "Harry", "Robert"])==["Harry", "John", "Robert"]
  assert sort_names(["Ashley", "Zoe", "Benjamin"])==["Ashley", "Benjamin", "Zoe"]
  assert sort_names([ ])==[ ]
  assert sort_names(["Ava", "Liam", "Ethan", "Mia"])==["Ava", "Ethan", "Liam", "Mia"]
output: def sort_names(names):
      return sorted(names)