Offering

Offering is usually used to offer something to someone else.

actual offering types there are many, but this time I am only talking about offering the service / help.

examples..
-what can I do for you ?
-Can I help You ?
-Can I do something for you ?
-Do you want something to eat ?
-Shall I get you something to read ?

Accepting offering service/help :
-thanks very much
-thank's very kind of you
-thank you
-[oh] yes, please
-lovely

Not accepting offering servica/help :
-no, thanks
-that's very kind of you, but . . .
-thanks for offering, but . . .
-no, its all right, really
-no, really, I can manage [thanks].