Split the class into three teams.
Give every student one of these cards. It's not super important that they keep it a secret but it's a good idea.
Start with team one. One of the students will need to phone a member of the opposite teams.
They will use the targer dialogue.
A; Hello, this is (name). May I speak to (ember of different team.)
B: Hello, it's me.
A: Let's go XXXXing.
B: Sure/Sorry I can't/Sounds good!
A will then take B's card and that will be the amount of points that her team gets, ranging anywhere from 1 to 5 points. Keep going until yu run out of cards, or the bell goes. hahaha
If a student calls a student who already gave away their card, the student with no card (or the class) can say, "Sorry, he/she's not at home right now.