To dream that you are having dinner with someone you know indicates the special relationships you have with this person. The dinner could also signify the fact that you are very outgoing person who likes to be surrounded by the company. The actual hunger could also bring out the dreams about the dinner. If youre eating too much while having the dinner in your dream, it shows that you are trying to forget something while stuffing yourself with the food.
Read more about dreaming of Dinner in other dream meanings interpretations.