Method sends request to Yahoo YQL API.

def send(self, symbol, start_date, end_date):
        """Method sends request to Yahoo YQL API."""
        query = self.prepare_query(symbol, start_date, end_date)

        self.parameters['q'] = query
        response = requests.get(self.api, params=self.parameters).json()

        results = response['query']['results']['quote']

        return results