I only want a snack. I'm not very hungry.
B Let’s have a quick lunch. What would you like to eat?
B 我们来抓紧时间吃个午餐。你想吃些什么？
A I only want a snack. I'm not very hungry.
A 我只想吃点小点。我不是很饿。
B Me too. I just want one dish. I’m on a diet.
B 我也是。我只想点一个菜。我正在减肥。
A How about sharing a plate of spring rolls and salad.
A 咱们来共享一份春卷和撒拉吧。
如果你不想吃太多的东西，你可以说:
I only want a snack. / 我想吃点小点。
I'm not very hungry. / 我不是很饿。 
I only want a quick lunch.
I don’t want much to eat.
Only a little for me, please.
How about sharing a dish?
A snack is fine.

我只想吃一个快餐。
我不想吃太多。
请给我一点就好。
共享一份鱼肉怎么样？
一些小点就好。