I'm not sure without more information. It could be a couple in love. Maybe it's a story about a man and a woman who meet at a dinner party and they become the main characters in this love story centered around dinners.
Since we don't have much detail, it could be various types of characters. It might be two old friends who gradually realize their love for each other over many dinners. Or it could be a single parent who meets someone new during a dinner event, and they both become the main characters in this love - inspired by dinners - story.
There's no way to know for sure without more information, but it could be a man and a woman who are brought together by the chicken salad dinner.
Perhaps a young couple, like a man named Jack and a woman named Rose. They could be food lovers who discover their love for each other during a coconut shrimp dinner.
The main characters could be a couple. They might be a young, passionate pair who find love over the shared experience of a chicken and artichokes dinner.
It could be a young couple, a man and a woman who are food lovers. They might be in their twenties or thirties, exploring new restaurants and cuisines. The Asian chicken salad dinner brings them together.
A chef and a food critic. The chef prepares a brussel sprouts dinner that impresses the critic so much that they fall in love.
The main characters could be the host of the dinner party and a few prominent guests.
In a Christmas dinner story, the main characters are often family members. There could be grandparents who are the wise and loving figures at the table. Parents are also important, like the mother who might have cooked the dinner and the father who carves the turkey. And of course, the children are there, excited for the presents and the delicious food.
Since I don't know the exact 'the dinner novel', I can't say for sure. But it could be a host of the dinner as a main character, who might be controlling the flow of the evening. There could also be a mysterious guest.
Given that we have no details about this 'dinner list novel', the main characters could be anyone. Maybe there's a character who is in charge of creating the dinner list and their friends or family who are affected by it. Or perhaps it's a group of strangers brought together by this dinner list in a rather mysterious way.
I don't know as I'm not familiar with this particular novel. But typically in a dinner party - themed novel, there could be the host or hostess as a main character.