i would like a train leaving from london liverpool street on wednesday , please . i am going to cambridge & leaving after 11:15 .
of course . what s your destination ? also when do you wish to leave and arrive by ?
{'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '11:39'} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
i have an 11:39 . would you like me to book that for you ?