i would like to book a taxi to the scott polar museum
{'service': 'taxi', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'taxi', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
i would be happy to help . what time do you want to leave and and or arrive by ?