What time should I leave if I need to drive from here to my 10am dentist appointment?
[IN:GET_ESTIMATED_DEPARTURE What time should I leave if I need to [SL:METHOD_TRAVEL drive ] from [SL:SOURCE [IN:GET_LOCATION [SL:LOCATION_USER here ] ] ] to [SL:DESTINATION [IN:GET_EVENT [SL:ORGANIZER_EVENT my ] [SL:DATE_TIME 10 am ] [SL:CATEGORY_EVENT dentist appointment ] ] ] ? ]