How long will it take for me to get to Melissa's house from Christina's house right now?
[IN:GET_ESTIMATED_DURATION How long will it take for me to get to [SL:DESTINATION [IN:GET_LOCATION_HOME [SL:CONTACT Melissa ] 's house ] ] from [SL:SOURCE [IN:GET_LOCATION_HOME [SL:CONTACT Christina ] 's house ] ] [SL:DATE_TIME_DEPARTURE right now ] ? ]