i am looking for a saturday train departure from cambridge i am hoping for a train to bishops stortford after 21:15 . yes please book the train for 23:29 .
what destination would you like me to look for ? there are 2 trains that fit this request . 1 at 21:29 and another at 23:29 . did you want me to book 1 of them for you ?
{'service': 'train', 'act': 'request', 'slot_name': 'people', 'value': '?'}
how many tickets do you need ?