Help with an excel formula.

Hello, 

I have 2 tables on different sheets both containing mobile numbers in colA. (Table 2 has less phone numbers than table 1)

Table 1 has user name in col C and address in colD. 

Table 2 has user name in col D and address in col E. 

I need to compare table 1s mobile numbers to table 2 mobile numbers.

If the mobile number appears anywhere in table 2 I need it to automatically copy and past the user and address into the correct place in table 1. 

If the mobile number isn't in table 2 it can just return "UNKNOWN". 

SO far I have this formula which returns "UNKNOWN" or "TRUE" but I cannot figure out how to change "TRUE" to the appropriate user and address.

=IF(ISNA(VLOOKUP(A2,Sheet2!$A$2:$A$100,1,0)),"UNKNOWN","TRUE").

Thank you for any help.