answer: #Person1# got invited to a dinner party, and #Person2# tells #Person1# to arrive on time or a bit late because the hose and hostess are preparing. If late, contacting the host to let them know the situation.
documents: #Person1#: I've been invited to a dinner party tomorrow. What time should I arrive for that?
  #Person2#: On time, or even a few minutes late, but not early.
  #Person1#: Why?
  #Person2#: Because the host and Hostess are running around finishing last minute chores.
  #Person1#: I never thought of that. But what the dinner get cold if people come several minutes late?
  #Person2#: No. Generally it's planned so that when you arrive you get a drink and then chat with people for a while. When all the guests have arrived and finish their drinks, you sit down to dinner or go to the buffet table.
  #Person1#: What are they get caught in a traffic jam, or the subways late or something else happens? And I'm going to be really late.
  #Person2#: You must call and say you're coming, but you'll be late.
  #Person1#: Oh, I see.
  #Person2#: By the way, a dinner invitation doesn't call for you to eat and run.
  #Person1#: What do you mean?
  #Person2#: People do talk to each other during the meal. But after dinner, they also sit around and talk. If the conversation is good, it might go on until 11:00 or 12:00 or even late into the night. I think it's a good opportunity to practice your oral English.
  #Person1#: I agree. I'll tell mom, maybe I will be late back home.