i am looking for a train departing from cambridge that will arrive at bishops stortford .
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'many'} {'service': 'train', 'act': 'inform', 'slot_name': 'depart', 'value': 'cambridge'} {'service': 'train', 'act': 'inform', 'slot_name': 'dest', 'value': 'bishops stortford'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'day', 'value': '?'}
there are many trains that leave cambridge and arrive in bishops stortford , what day and time would you like to leave ?