i need a train on monday leaving birmingham new street ? birgmingham new street from cambridge anytime after 21:00 . yes will you book it for me ?
where are you headed ? what time monday would you like to depart ? tr8406 will depart at 21:40 . is that okay ?
{'service': 'train', 'act': 'request', 'slot_name': 'people', 'value': '?'}
how many tickets will you need ?