Verify CSV Data

#Import Source CSV
$CSV = Import-CSV -Delimiter "," -Path c:\temp\users.csv

#Loop to Create Active Directory Accounts
Foreach ($r in $csv){

    #Manager Information
            If( ($($r.MFirst -like "")) -and ($($r.MLast -like "")) ){

                $MGRMess = "No Manager was entered"

                }

                Else{

                     $Mdisplayname = "$($r.MLast)" + ", " + "$($r.MFirst)"
                     $Msam = Get-ADUser -Filter {Name -eq $Mdisplayname} | Select -ExpandProperty SamAccountName

                     If( ($Msam -eq $null) -or ($Msam -eq "") ){

                        $MGRMess = "Could not find $Mdisplayname in Active Directory"

                         }

                         Else{

                            $MGRMess = "Manager is $Mdisplayname/$Msam"

                            }
                    }

Write-Output $MGRMess