i am looking for a train on tuesday to arrive in cambridge by 19:00 , can you help me please ? i will be leaving from cambridge .
sure ! where will you be departing from ?
{'service': 'train', 'act': 'select', 'slot_name': 'depart', 'value': 'cambridge'} {'service': 'train', 'act': 'select', 'slot_name': 'dest', 'value': 'cambridge'}
i am sorry , i am confused . you are leaving from cambridge to go to cambridge ?