please help me book a taxi to nandos i am leaving from riverboat georgina .
sure . what is your departure site ?
{'service': 'taxi', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'taxi', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
okay , and what time would you like to leave or arrive by ?