Error While Inserting Data In DataBase ?

my requirment is insert TableName and JourneyDate and FlightNumber alongwith otherdata at RunTime but i get error, I tried it several times.
Table Structure is:  Create Table HA142
(
JourneyDate DateTime primary key,
FlightNo char(5)not null FOREIGN kEY REFERENCES FLIGHTS(FlightNo),
FirstClassSeatAvalable int,
BusinessClassSeatAvalable int,
EconomyClassSeatAvalable int,
FsWaitingAvalable int,
BsWaitingAvalable int,
EcWaitingAvalable int
)  string flightno = drpFlightNo.SelectedItem.Text;
string JourneyDate = Session["JourneyDate"].ToString();
string newStrign = ",18,42,280,3,7,35)";
SqlConnection myConn = new SqlConnection("workstation id=JASIM;packet size=4096;user id=ASPNET;data source=JASIM;persist security info=False;initial catalog=Test");
SqlCommand populateFlightTable = new SqlCommand("INSERT INTO "+flightno+" VALUES("+JourneyDate+","+flightno+newStrign,myConn);
myConn.Open();
populateFlightTable.ExecuteNonQuery();
myConn.Close();
 whenever compiler reached to populateFlightTable.ExecuteNonQuery(); I received error. i tried it to rectify several times but no result.
plz hemp me...