input: Write a function to sort a given list of names alphabetically. The function should take in a list of names as input and return the sorted list. 
  
  assert sort_names(["John", "Harry", "Robert"])==["Harry", "John", "Robert"]
  assert sort_names(["Alice", "Bob", "Charlie"])==["Alice", "Bob", "Charlie"]
  assert sort_names([])==[]
  assert sort_names(["Zoe", "Yvonne", "Xander"])==["Xander", "Yvonne", "Zoe"]
output: def sort_names(names):
      return sorted(names)