def find_calls_made_by_campaign(call_campaign):
    """
    Find all calls for this campaign that have a response

    Parameters
    ----------
    call_campaign : CallCampaign
        Call Campaign for calls

    Returns
        -------
        Call list
            Returns matching Call list for campaign
    """
    calls = call_campaign.call_set.all()
    calls_with_responses = [x for x in calls if x.has_response]
    return calls_with_responses