i am trying to find an expensive restaurant in the centre part of town . yes , a table for 1 at 16:15 on sunday . i need the reference number .
the cambridge chop house is an good expensive restaurant in the centre of town . would you like me to book it for you ?
{'service': 'booking', 'act': 'book', 'slot_name': 'ref', 'value': 'nklsht8g'}
great your reference number is nklsht8g