i need a train for tuesday after 12:30 i need to go from cambridge to bishops stortford .
where would you like to go
{'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '13:29'} {'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr2771 '} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
tr2771 leaves at 13:29 . would you like me to book a reservation for you ?