I need to book a train from Cambridge and Norwich on Wednesday and I need to be there at 15:30. When would you like to leave by? I don't care when I leave as long as I get there by 15:30. There are 9 trains matching your query. Shall I book one? Can I get the departure and travel time of the train arriving closest to 15:30? The travel time is 79 minutes. And the departure time please? For the train that arrives closest to 15:30? The departure time is 13:38 and it arrives at 14:55. Would you like me to book it for you?