In Sheet0 I have columns A to O populated with travel data.
E contains email address
I contains departure date
L contains country
B has the formula =IF(COUNTIFS(TA!C:C,E2,TA!E:E,"*"&L2&"*",TA!D:D,"<="&I2+7,TA!D:D,">="&I2-7)>0,"yes","no") which looks to see if there is a corresponding value...