can i get a train to cambridge on saturday ? i will leave birminggam new street .
sure , what is your departure station ?
{'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
what time would you like to leave or arrive on saturday ?