input: Write a function to create a dictionary in Python with specified key-value pairs. The function should return the dictionary. If no key-value pairs are provided, the function should return an empty dictionary.
  assert create_dictionary('FirstName', 'John')=={'FirstName': 'John'}
  assert create_dictionary('LastName', 'Doe')=={'LastName': 'Doe'}
  assert create_dictionary('Age', 30)=={'Age': 30}
  assert create_dictionary()=={}
  assert create_dictionary('City', 'New York')=={'City': 'New York'}
output: def create_dictionary(*args):
      if len(args) == 0:
          return {}
      elif len(args) == 2:
          return {args[0]: args[1]}
      else:
          return {}