code: func (r *EchoResponse) Reprompt(text string) *EchoResponse {
  	r.Response.Reprompt = &EchoReprompt{
  		OutputSpeech: EchoRespPayload{
  			Type: "PlainText",
  			Text: text,
  		},
  	}
  
  	return r
  }
docs: // Reprompt will send a prompt back to the user, this could be used to request additional information from the user.