The ornamental design for a telephonebooth, as shown and described.
FIG. 1 is a front perspective view of a telephone booth showing my new
design;
FIG. 2 is a top plan view thereof at an enlarged scale;
FIG. 3 is a front elevational view thereof; and,
FIG. 4 is a side elevational view thereof taken at such an angle that the
side of the telephone booth extends perpendicularly, the other side view
being identical to this view.