looking for a train that leaves on saturday leaving birmignham new street , to cambridge .
yes , there are 404 trains . would you like to tell me more to narrow your search ?
{'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
no problem . any preference on times ?