i need a train to cambridge , please london liverpool street . i would like to leave on saturday and would like to arrive in cambridge by 16:45 .
i would love to help you with that ! where is your departure location ? what day are you leaving and what time to you want to depart ?
{'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr4078 '} {'service': 'train', 'act': 'inform', 'slot_name': 'arrive', 'value': '15:07'} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
train tr4078 suits you needs and arrives by 15:07 . shall i book it for you ?