can you help me find a train leaving thursday departing from london liverpool street ? i do not have a preference but i do need to be in cambridge by 15:00 .
i have 10 trains leaving at this day and time with cambridge as the destination . what will your approximate departure time be ?
{'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr1268'} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'} {'service': 'train', 'act': 'request', 'slot_name': 'people', 'value': '?'}
the tr1268 will get you there by 13:07 , how many tickets ?