Sure, you could call the play's dialogue witty, in a homespun way.

I worked very hard to make the dialogue sophisticated and witty.

Her books are noted for being full of humor, with sharp, witty dialogue.

If people look at the curtains instead of listening to the witty dialogue, that's not my fault.

Watch the movie for its witty dialogues and energetic performances.

However, the plot is generally less important than its witty dialogue.

The play contains some of Kane's wittiest and most cynical dialogue.

It is history that gives these books power to move and instruct long after we have forgotten the wonderfully witty dialogue.

The plot of the comedy, often concerned with scandal, is generally less important than its witty dialogue.

It has been called "a highly entertaining movie filled with witty dialogue and over-the-top action."