help me reserve a taxi please i will be leaving from pizza express fen ditton
okay , what is your departure site ?
{'service': 'taxi', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'taxi', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
okay . can i get a time that you would like to leave after or arrive by ?