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If your Slice B filter expression is say [Email]=USEREMAIL() returning single row per user.
Then your slice A filter expression could be something like
AND ( IN [Status A], Slice B [Status B]) , IN[ Customer A], Slice B [Customer B]) )
This is just an indicative expression. Actual will depend on your requirements, [Customer A] and [[Status A] are columns in Table A on which Slice A is based. [Customer B] and [[Status B] are columns in user details Table B on which Slice B is based.
As an important relevant reading on this user-based filtering, please go through the articles below just in case you have not. There are two different filters -Security and Slice that one will use based on app security requirements.