I don't want to miss my flight at 5:00 pm today; can you alert me at 4:00 pm.
[IN:CREATE_REMINDER I don't want to miss [SL:TODO [IN:GET_TODO [SL:TODO my flight ] [SL:DATE_TIME at 5 : 00 pm today ] ] ] ; can you alert [SL:PERSON_REMINDED me ] [SL:DATE_TIME at 4 : 00 pm ] . ]