The ornamental design for a diningtable, substantially as shown and described.
FIG. 1 is a top plan view of a dining table showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof; and,
FIG. 4 is a bottom plan view thereof.
The left side elevational view is substantially identical to the right side
elevational view of FIG. 3; and, the rear elevational view is
substantially identical to the front elevational view of FIG. 2.