Cut out the cards. If you want to you can laminate them.
Divide your class into 2 groups. Form a double circle (inner and outer circle). The pupils in the inner circle get the white cards and the ones standing in the outer circle the grey ones.
You may use a signal (like a bell) to start the game. The teams start asking each other questions. They should alternate so that everybody asks questions and gives answers. (In this connection the pupils can also practice conversation phrases like "It's your turn", "What about you?", "Mine, too.", "Interesting", ...)
After some time you ring the bell again and the inner circle moves one partner to the left or right. And they start again asking their questions.
The partners who agree in 3 categories will be the speed date of the day. (key included)