i would like to find a train that will arrive in cambridge by 19:30 . norwich on tuesday .
i found several trains for you ! where would you be departing from ?
{'service': 'train', 'act': 'inform', 'slot_name': 'arrive', 'value': '18:35'} {'service': 'train', 'act': 'inform', 'slot_name': 'dest', 'value': 'cambridge'} {'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr2175'} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
tr2175 will arrive in cambridge at 18:35 . would you like tickets on that train ?