I know it may seem surprising to people, but learning dialog that has a conversational flow to it is not that difficult.
“Audiences are always better pleased with a smart retort, some joke or epigram, than with any amount of reasoning.”
“There are, of course, always painters whom I admire and find fascinating. I've often thought, 'Goodness, if I could paint like the Danish Golden Age painters, the early 19th century painters, the way they could paint a landscape - absolutely beautiful.'”