Ok, I have five trains. Any time preference?
I need to tkae a train from London Kings Cross to Cambridge I would like to arrive by 10:30. Do you have anything for that?
{"__type": "Inform", "entity": {"__type": "Train", "choice": "five"}} {"__type": "RequestAlternatives"}
{"__type": "Inform", "entity": {"__type": "Train", "arrive by": "10:30", "choice": "3"}} {"__type": "Request", "service": "train", "values": ["day"]}
I have 3 trains a day that arrive by 10:30. Which day are you looking to travel?