Removing all matching entries of 1st table from other table using merge()

Question

I want to remove all matching entries of 1st table from other table using merge().

Table1:

ID  age
1   24
2   33
3   44
4   22

Table2:

ID  age
1   24
2   33
3   44
4   22
5   98
6   88

Expected Output:

ID  age
5   98
6   88

I want to make it happen by merge() for ease else dplyr options will be good as well.