i would like to find a train from cambridge that leaves thursday . i would like to travel to cambridge .
what is your destination ?
{'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'depart', 'value': '?'}
okay . where are you departing from ? and , do you have any particular time frame in mind ?