What’ s the woman’ s problem?

M: Hey, Mrs. Jackson. Would you like some help? Let me carry the box for you.
W: No,no. I can do it all right,but could you hold the door open for me,please?
M: Certainly.

W: I like the skirt, but the color...
M: You know, Miss. The bright yellow lights in the shop make things a little different here. That is why the blue skirt appears green.