i need a train that is leaving on friday . i am traveling from cambridge to stansted airport on friday . i need to arrive by 9:15 .
i can help you with that . can you give me the departure and destination location -s and a preferred timeframe ?
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': '4'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'}
i have 4 trains available . do you have a preferred departure time ?