i need a train that leaves cambridge on monday after 09:15 i will be going to ely . yes , that will be sufficient .
where will you be going ? tr8399 leaves cambridge at 09:50 and arrives by 10:07 , does this suit your needs ?
{'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
would you like me to book this for you ?