i am looking for a train going to birmingham new street and should leave on thursday i am departing from cambridge and want the train to arrive by 17:15 . it does not matter , just as long as it arrive by 17:15 .
where will you departing from ? okay , what time do you want to leave ?
{'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr5961'}
how about train tr5961 ?