Some sample situations:

1. Two athletes who will compete in a match tomorrow
2. A sick person in hospital and a friend who visits
3. Two old people who are almost deaf
4. A divorced couple meeting on the street
5. A couple who's love is doomed by marriage promised to others
6. A teacher and a student
7. Two people who are angry at each other
8. A landlady and her overdue tenant
9. Two people who have met before, but can't remember where
10. Two spies who are meeting late at night
11. Two old friends who run into each other
12. A detective and a criminal