From Colin Dyer’s perspective, the worldwide real estate market is in pretty bad shape. As president and CEO of global real estate services firm Jones Lang LaSalle, Dyer has seen firsthand the problems that an absence of liquidity is causing for buyers who need financing for real estate transactions. Yet he is also optimistic that comparatively little competition and some good bargains provide excellent market opportunities for those who know where to look. Dyer expanded on these points during an interview with Knowledge at Wharton.   An edited transcript of the conversation follows. Knowledge at Wharton: Our next guest is Colin Dyer, president and CEO of global real estate services firm Jones Lang LaSalle. Thank you so much for joining us today. Colin Dyer: It’s a pleasure. Knowledge at Wharton: The question on everyone’s minds these days is the world financial crisis and its impact on real estate. Could you tell us how you see the downturn affecting the U.S. market and also emerging markets?…