Customers that are both active and interested should receive a phone call:
derive type:single value:AND(isActive, isInterested) as:'phoneCall'
Customers that are either active or interested should receive an email:
derive type:single value:OR(isActive, isInterested) as:'sendEmail'
Customers that are neither active or interested should be dropped from consideration for the offering:
derive type:single value:AND(NOT(isActive),NOT(isInterested) as:'dropCust'
A savvy marketer might decide that if a customer receives a phone call, that customer should not be bothered with an email, as well:
set col:sendEmail value:IF(phoneCall == "TRUE", FALSE, sendEmail)