1. May I take your order?
2. Would you like to order now?
3. Will you order?
4. Order, please.
5. Please order your food.
6. Are you ready to order?
7. Do you want to order?
8. Why don't you order?
9. How about ordering?
10. What do you think of ordering?
(In a restaurant, can the clerk use those expressions to get the order from customers?)