answer: Mary calls Jack and invites him to dinner. Jack is busy and they finally agree on having dinner next Wednesday.
documents: #Person1#: Hello, Jack here.
  #Person2#: Hello, Jack. It's Mary. What are you doing in your office?
  #Person1#: I'm working. I often work late on Thursday. I'm busy this week.
  #Person2#: Would you like to come and have dinner with us on Friday?
  #Person1#: Tomorrow? No, I am afraid I won't be able to. I'm going on business to Birmingham.
  #Person2#: What about Saturday?
  #Person1#: Sorry, I never go out on Saturday evening. I always watch football on Saturday evening.
  #Person2#: Will you come round next Tuesday?
  #Person1#: Next Tuesday? Just a moment. It will be the twenty-first of May? Oh, dear. Hum, I promised my aunt I'll be at her birthday party.
  #Person2#: What do you say next Wednesday then?
  #Person1#: Let me see. Yes, Mary. Let's make it next Wednesday.
  #Person2#: Okay. Bye.
  #Person1#: Bye.