I tested syntax but cannot test for data without your actual file (I'm not going to type in all your data from a screenshot). But try this:

=CONCATENATE(

IF(ISBLANK(G2),"",CONCATENATE(F2," ",TEXT(G2,"mm/dd/yyyy"),",")),
IF(ISBLANK(I2),"",CONCATENATE(H2," ",TEXT(I2,"mm/dd/yyyy"),",")),
IF(ISBLANK(K2),"",CONCATENATE(J2," ",TEXT(K2,"mm/dd/yyyy"),",")),
IF(ISBLANK(M2),"",CONCATENATE(L2," ",TEXT(M2,"mm/dd/yyyy"),",")),
IF(ISBLANK(O2),"",CONCATENATE(N2," ",TEXT(O2,"mm/dd/yyyy"))))