What time should I leave to make it to my appointment with Chris by 6:30pm?
[IN:GET_ESTIMATED_DEPARTURE What time should I leave to make it to [SL:DESTINATION [IN:GET_EVENT [SL:ORGANIZER_EVENT my ] [SL:CATEGORY_EVENT appointment ] with [SL:ATTENDEE_EVENT Chris ] ] ] [SL:DATE_TIME_ARRIVAL by 6 : 30 pm ] ? ]