i need a train on tuesday that goes to london kings cross .
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'ten'} {'service': 'train', 'act': 'inform', 'slot_name': 'day', 'value': 'tuesday'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'}
there are 10 trains on tuesday to that location . what time would you like to depart ?