i need a train that will be in cambridge by 3:00 i will be travelling on wednesday . i am leaving out of london king s cross .
what day will you be travelling ? alright , where will you be departing ?
{'service': 'train', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
what time do you need to be there by ? is it 13:00 ?