let s go with the train first . i am looking for 1 that leaves after 16:30 on saturday .
{'service': 'train', 'act': 'request', 'slot_name': 'depart', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'dest', 'value': '?'}
from where and to where will you travel ?