i need help finding a train . can you do that ? i would like to leave liverpool street on tuesday and arrive in cambridge .
of course . where are you traveling to ?
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': '10'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'}
we have 10 different trains on that day . do you prefer a particular time ?