Create and save an Excel file

I have the following code that creates a new Excel file in my C # code. When I try to save a file, I would like the user to highlight the save location.

In method # 1, I can save my file using the SaveCopyAs workbook without prompting the user for the location. This saves one file in the C: \ Temp directory.

Method # 2 will save the file in the Users \ Documents folder, then prompt the user to select a location and save a second copy. How can I remove the first copy from the save in the Users \ Documents folder?

Excel.Application oXL;
Excel._Workbook oWB;
Excel._Worksheet oSheet;
Excel.Range oRng;

try
{
    //Start Excel and get Application object.
    oXL = new Excel.Application();
    oXL.Visible = false;

    //Get a new workbook.
    oWB = (Excel._Workbook)(oXL.Workbooks.Add(Missing.Value));
    oSheet = (Excel._Worksheet)oWB.ActiveSheet;

    // *****
    oSheet.Cells[2, 6] = "Ship To:";
    oSheet.get_Range("F2", "F2").Font.Bold = true;

    oSheet.Cells[2, 7] = sShipToName;
    oSheet.Cells[3, 7] = sAddress;
    oSheet.Cells[4, 7] = sCityStateZip;
    oSheet.Cells[5, 7] = sContactName;
    oSheet.Cells[6, 7] = sContactPhone;

    oSheet.Cells[9, 1] = "Shipment No:";
    oSheet.get_Range("A9", "A9").Font.Bold = true;
    oSheet.Cells[9, 2] = sJobNumber;

    oSheet.Cells[9, 6] = "Courier:";
    oSheet.get_Range("F9", "F9").Font.Bold = true;
    oSheet.Cells[9, 7] = sCarrierName;

    oSheet.Cells[11, 1] = "Requested Delivery Date:";
    oSheet.get_Range("A11", "A11").Font.Bold = true;
    oSheet.Cells[11, 2] = sRequestDeliveryDate;

    oSheet.Cells[11, 6] = "Courier Acct No:";
    oSheet.get_Range("F11", "F11").Font.Bold = true;
    oSheet.Cells[11, 7] = sCarrierAcctNum;
    // *****

    Method #1
    //oWB.SaveCopyAs(@"C:\Temp\" + sJobNumber +".xls");

    Method #2
    oXL.SaveWorkspace(sJobNumber + ".xls");
}
catch (Exception theException)
{
    String errorMessage;
    errorMessage = "Error: ";
    errorMessage = String.Concat(errorMessage, theException.Message);
    errorMessage = String.Concat(errorMessage, " Line: ");
    errorMessage = String.Concat(errorMessage, theException.Source);
}