'Return a list of :class:`Conference` resources
:param status: Show conferences with this status
:param friendly_name: Show conferences with this exact friendly_name
:param date updated_after: List conferences updated after this date
:param date updated_before: List conferences updated before this date
:param date created_after: List conferences created after this date
:param date created_before: List conferences created before this date'

@normalize_dates
def list(self, updated_before=None, updated_after=None, created_after=None, created_before=None, updated=None, created=None, **kwargs):

    kwargs['DateUpdated'] = parse_date(kwargs.get('date_updated', updated))
    kwargs['DateCreated'] = parse_date(kwargs.get('date_created', created))
    kwargs['DateUpdated<'] = updated_before
    kwargs['DateUpdated>'] = updated_after
    kwargs['DateCreated<'] = created_before
    kwargs['DateCreated>'] = created_after
    return self.get_instances(kwargs)
