I debated this for a while and ended up leaving it where it was. 
In the other quizzes, the prompt is only sent to ussd while mxit is just sent straight to the quiz after answering an 'engagement' type question. The prompt in this case does not need to handle a reply.

In this conversation-quiz flow, the prompt is sent to both ussd and mxit with different messages for each (although, since pippa is handling the ussd, we're only sent to mxit) and I have to handle a reply to the prompt - which I didn't in the prior case. In this way, I feel like the prompt is more related to the 'push' rather than the 'quiz'. It also seemed like I might have to hack it into the existing ``prompt`` code I had.