SSIS Lookup transformation help

Good Day,

I am new to SSIS, could please suggest me about Lookup transformation.

Ex: I would like to see my data after lookup in the database side

      Person ID     Course

       1               SharePoint

       2               SSIS

       3               SSRS

but, i am getting like this,

       1              

       2              

       3              

      NULL             SharePoint

      NULL              SSIS

      NULL              SSRS

could please provide me suitable solution, thank you.

Kind Regards