i would like to book a train that is running on tuesday and departs anytime after 20:15 , can you help me with that ?
{'service': 'train', 'act': 'request', 'slot_name': 'depart', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'dest', 'value': '?'}
where would you like to travel from and to ?