Professor , do you have a few moments when I could meet with you ?   I schedule my appointments from two to four on Saturday ; what works best for you ?   Three would be a good time .   Great , do you need directions to my office ?   I'm not sure .   Well , just make sure to go through the double doors , and I'll be on the right .   OK , I'll find it .   It's very easy to find .   See you then . 