input: from turtle import back
  
  def complete_task(input_utterance: str) -> str:
      """Generate a natural language response based on the input utterance.
      >>> complete_task("What time is it?")
      'It is currently [timestamp].'
      """
output:     import datetime
      current_time = datetime.datetime.now().strftime("%H:%M:%S")
      return f'It is currently {current_time}.'