can you help me find a train going to cambridge ? i will be leaving from birmingham new street on saturday .
i have many trains available . what is your departure site ?
{'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
did you have a time in mind ?