What is a polite way to ask to 打包 (dǎbāo) "take away" my meal? Is 我想打包 acceptable? After learning about being polite by using 用一下, 用一用, and 用用 (etc.) instead of just 用 (see my previous question), I'm a bit more careful when asking for things.

The other day I was at the cafeteria and I wanted to 打包 (dǎbāo) = take away, so I said:


  我想打包
  Wǒ xiǎng dǎbāo


But it doesn't following one of the polite forms above, so I'm worried it was a bit blunt.  Nevertheless, 打包一打包 and 打打包包 seem overly long (and I'm not sure they're correct) and 打包一下 seems strange to me since I will be permanently taking away the food.

Question: What is a polite way to ask to take away my meal?
No, just say 

"Hello! Waiter! I need (my food to be) taken away, is that ok?"
你好，服务员，我要打包，可以吗？


or

"Hello! Waiter! Can you help me package (my food)?"
你好，服务员，能帮我打包吗？


I don't know how you talk about this in English-speaking country, but I will use that sentence in China.

打包一下 is ok. This action only happened once, once it's done, you'll take away your food, the waiter knows about that. This putting your food into a bag action will not last very long.