need a train to cambridge leaving after 11:45 .
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'quite a few'} {'service': 'train', 'act': 'request', 'slot_name': 'day', 'value': '?'}
we have quite a few trains available . what day are you wanting to travel on ?