Yes, you are right. When you reserve a "table" at a restaurant you are actually not promised chairs. If you want to reserve chairs - that’s +$20. Don’t want to reserve chairs? Just show up at the restaurant and there might be chairs available.
Try reserving a specific table at the restaurant. An hour before the dinner.
For some reason you fail to acknowledge that features listed under the price must be included in the price.
> Try reserving a specific table at the restaurant. An hour before the dinner.
Restaurants don't allow you to go through the reservation process to only suddenly mention at the last stage that the table has no chairs, or no table top (just table legs).
Are you under the impression that they are going to make you stand up on the flight?