If I leave at 6 pm how long will it take me to get to my 7 pm appointment
[IN:GET_ESTIMATED_DURATION If I leave [SL:DATE_TIME_DEPARTURE at 6 pm ] how long will it take me to get to [SL:DESTINATION [IN:GET_EVENT [SL:ORGANIZER_EVENT my ] [SL:DATE_TIME 7 pm ] [SL:CATEGORY_EVENT appointment ] ] ] ]