We claim the ornamental design for a dining table, as shown and described.
FIG. 1 is a perspective view of a dining table according to an embodiment of the invention.
FIG. 2 is an overhead view of a dining table according to an embodiment of the invention.
FIG. 3 is a side view of a dining table according to an embodiment of the invention, the view from the opposite side being a mirror-image thereof; and,
FIG. 4 is an end view of a dining table according to an embodiment of the invention, the view from the opposite end being a mirror-image thereof.