Hi, I understand that many think that dialogue should be limited. Alas, I think you are wrong. Dreadfully wrong.
Firstly, the most lauded films and television rely on dialogue, The West Wing, The Newsroom (both Aaron Sorkin) "Casablanca", "Twelve Angry Men" and I could go on and on. But I am sure you will agree that the dialogue carried in the films and TV series I mentioned is spectacular. I shall not (go on and on) mention this further but will turn my attention to novels (which all were talking about in the first place).
Secondly Most of the great and bestselling novels we know so well rely on huge swathes of dialogue. I talk not of everyday books but those that have caught the public imagination whilst still being cleverly written “Silence of the Lambs” By Thomas Harris dwells on dialogue. "The Exorcist" by William Peter Blatty (back in the top ten books-fifty years after it being written. In fact, all of “Blatty’s” books rely on dialogue. Dickens, Shakespeare, Peake, Marlow, Kipling. The Bronte's.
Thirdly The prestigious “Hugo” awards decided at one point to give an award to the best “Series of all time” they awarded this accolade to the “Foundation” series by Isaac Asimov.
A five-volume series that consists almost exclusively of dialogue.
I rest my case. Me lurd… (British barristers in grey wigs and pomposity, shrug, and droop realizing they have miscalculated, and that good dialogue is imperator Rex.