The conflict between Walter and Ruth is that Ruth is pregnant, she plans on getting an abortion but Walter disagrees. He didn't think she would do something like that and he's speechless.
Beneatha has a conflict with herself because of her hair, she wants to fit in and straighten it but she also wants it to be natural. She doesn't know what to do so she thinks bad of herself every time she looks in the mirror.
The conflict between beneatha and society is she doesn't know whether she wants to fit in as an american or from her origin country. Her family picks on her for trying to be different and be who she wants to be, but Asagi tells her she'd be beautiful natural and who she was born to be.