A doggy bag
打包袋

I want a doggy bag, waiter.
服务员，我想要个打包袋。
Sure. How do you like your meal today?
好的，您喜欢今天的饭菜吗？

Quite good. It was the most wonderful dinner I have ever had.
相当不错，这是我吃过的最好吃的一顿饭了。
I am glad you like it. Welcome next time.
很高兴您喜欢。欢迎下次再来。