hi , i am looking for a train that leaves on thursday and arrives by 18:30 from cambridge to stansted airport .
sure , which stations will you be using ?
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': '13'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '05:40'} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
there are 13 trains that match your needs . the first train leaves at 05:40 . do you want a ticket on this train or 1 that leaves later ?