英式、美式英语，“没关系”口语 怎么说？

Question

英式、美式英语，“没关系”口语和书面语 怎么说？
有2层含义
1、别人伤害了你，向你道歉，你说“没关系”
2、你帮助别人，别人感谢你，你说“没关系”

这2种用美式和英式口语怎么说？书面语应该都是thank you 吧？

Answer 1

第一种：
It doesn't matter.
Never mind.
That's OK.
It's all right.
第二种：
Not at all.
Don't mention it.
My pleasure.
You're welcome.

Answer 2

1.it doesn't matter.
never mind.

2.not at all.
you are welcome.
my pleasure.

Answer 3

that's all right
it's ok

you are welcome