PROC SQL Like Statement Case Problem

proc sql;
  create table a1 as
  select *
 from a
where customer like '%Jane%'
; quit;

proc sql;
  create table a2 as
select *
from a
where customer like '%Jane%'
and visit_dte between '01jan2001:00:00:00'dt and '31jan2001:00:00:00'
; quit;