Remind James that I am picking him up at 6 am; remind him 30 mins before.
[IN:CREATE_REMINDER Remind [SL:PERSON_REMINDED James ] that [SL:TODO [IN:GET_TODO [SL:TODO I am picking him up ] [SL:DATE_TIME at 6 am ] ] ] ; remind him [SL:DATE_TIME 30 mins before ] . ]