i am looking for information on trains from broxbourne to cambridge .
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'many'} {'service': 'train', 'act': 'request', 'slot_name': 'day', 'value': '?'}
there are many trains departing throughout the day , which day were you looking to leave ?