i need a train leaving after 17:00 and heading the birmingham new street . i would like to leave on thursday . i am going to have to ask you to check again , after 17:00 please .
ok , and what day would you like to leave ? there are no trains leaving at that time .
{'service': 'train', 'act': 'request', 'slot_name': 'depart', 'value': '?'}
where are you leaving from ?