i am wanting to book a train arriving in stevenage by 19:15 . can you help me ?
{'service': 'train', 'act': 'request', 'slot_name': 'depart', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'}
certainly , where will you be departing from and what time would you like to leave ?