影视英语口语:我请客

“我请客”在英语口语里能怎么说？

标准口语：I'll pay the bill.
地道口语：My treat.

素材来源：《我是山姆》
剧情简介：山姆的智商只是7岁孩子大小，当他辛苦一个人抚养大的聪明女儿长到8岁的时候，有关部门为了孩子的健康成长把她带走了。为此山姆找到了城里最有名的律师帮他辩护……

【台词片段】
Sam: How do you do? I'm Sam.
Rita: Mr. Dawson. It's a pleasure. Since somebody made a mistake unfortunately we only have a little time. Hold my calls unless it's my kid. I'll have a grande 2% capp.
Sam: That's a wonderful choice.
Rita: Can we get you something to drink?
Sam: Is it for free?
Rita: My treat.
Sam: OK. Thank you. Yeah, I would like a glass of milk.