i would want to find a train going to cambridge . the train should leave on wednesday and should depart from ely
ok . and where are you leaving from ?
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': '10'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
okay , there are 10 trains available . do you have a departure or arrival time in mind ?