Sorting and Matching Columns in Excel

Hi People...

I see there are so many questions and answers on sorting data....... I have one for you, a solution for which would help me no end...

I have two excel spreadsheets.... one with a list of customers, and the qty of visits they took last year; the other shows a(regularly updated) list of customers, and their visits they are booking for the coming year.... so... like this

Sheet 1:
Customer QtyVisits Scheduled (Yes/No)

Sheet 2:
Customer QtyVisits

I have to put the data from Sheet 2 alongside the data from Sheet 1, i.e. copy it onto the same spreadsheet, and then be able to sort and match up both sets of data.... this way I can see who still needs to be scheduled etc etc...

Is there any way I can do this?