Not to send you into rewrite mode yet but.
The conversations could have been with "God, other angels*, and Karoline; well maybe the Devil will chime in if things get really bleak."
So you do have a few other potential characters who can participate. Also you're allowed to add to the dialog, it isn't limited to those 7 sentences. You just have to make sure you include them, in any order you wish and with any additions that will help, split them up or do whatever works.
I had hoped the instructions were clear on that but after reading Nikita's comments over in level 3 I'm no longer sure.
If you have any other questions please ask, This isn't supposed to impose a writing block but turn you into a writing bulldozer.
Keep plugging
Mad Lews
*Hmm an angelic gripe session before they punch in for the night shift....