Oracle 11g Release 2

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with login as (
    select timestamp'2019-12-19 03:59:33.637' login_time, 1 id from dual
    union all select timestamp'2019-12-19 06:58:16.318', 2 from dual
    union all select timestamp'2019-12-19 10:19:26.039', 2 from dual
    union all select timestamp'2019-12-19 10:26:03.411', 2 from dual
    union all select timestamp'2019-12-19 13:35:56.006', 2 from dual
),
logout as (
    select timestamp'2019-12-19 04:34:22.535' logout_time, 1 id from dual
    union all select timestamp'2019-12-19 07:52:21.568', 2 from dual
    union all select timestamp'2019-12-19 14:06:13.585', 2 from dual
)
select
    id,
    min(case when action = 'in' then dt end) login_time,
    max(case when action = 'out' then dt end) logout_time
from (
    select
        t.*,
        sum(case when action = 'in' then 1 else 0 end)
            over(partition by id order by dt) grp
    from (
        select id, login_time dt, 'in' action from login
        union all select id, logout_time, 'out' from logout
    ) t
) t
group by id, grp
order by id, grp

ID	LOGIN_TIME	LOGOUT_TIME
1	19-DEC-19 03.59.33.637000000 AM	19-DEC-19 04.34.22.535000000 AM
2	19-DEC-19 06.58.16.318000000 AM	19-DEC-19 07.52.21.568000000 AM
2	19-DEC-19 10.19.26.039000000 AM	null
2	19-DEC-19 10.26.03.411000000 AM	null
2	19-DEC-19 01.35.56.006000000 PM	19-DEC-19 02.06.13.585000000 PM