Since you have such a short period of time, you need to be very direct, and being direct can spell trouble if you are not smooth enough. I wouldn't recommend it. Indirect game and seduction in general requires time (hours) and attention. It is almost impossible while someone is working. In case you want to try anyway, considering the risks, I would recommend a very honest and playful approach. Maybe this guy can inspire you (especially at around 0:45 into the clip):
http://www.youtube.com/watch?feature=pl ... uE_VSfR_cQ