听力原文:M: Hello, I'd like to buy 2, 500 shares of MFST. What's the market? W: Let me check it for you. Just a moment, please. NYSE is presently 32. 65 bid, 32. 72 asked, last trade at 32. 68 up a nickel. Volume is 12, 500. The Dow is down 33 points. 1, 000 are offered at 32. 72 and another 500 at 32. 75. M: Please buy 2, 500 D&M at 32. 70 with 10 cents discretion good for today only. W: OK, I have got it. I will call you as soon as we have a fill. Where does this conversation take place?