Stored Procedure code in DAL

public DataSet GetOnlineTicketsReport(DateTime dStartDate,DateTime dEndDate,string strScreenName, string strShowTime)
{

MySqlCommand cmd = new MySqlCommand("LMT_GetReport", Conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("?DD_StartDate", MySqlDbType.Datetime);
cmd.Parameters["?DD_StartDate"].Value = dStartDate;
cmd.Parameters.Add("?DD_EndDate ", MySqlDbType.Datetime);
cmd.Parameters["?DD_EndDate "].Value = dEndDate;
cmd.Parameters.Add("?VV_ScreenName ", MySqlDbType.VarChar, 50);
cmd.Parameters["?VV_ScreenName "].Value = strScreenName;
cmd.Parameters.Add("?VV_ShowTime ", MySqlDbType.VarChar, 50);
cmd.Parameters["?VV_ShowTime "].Value = strShowTime;
DataSet ds = new DataSet();
MySqlDataAdapter da = new MySqlDataAdapter(cmd);
da.Fill(ds);
return ds;
}