i need some information on a train going to cambridge .
user
i would love to help you with that ! what day are you headed out ?
assistant
sunday . sometime after 21:00 , if possible .
user
there are multiple trains headed to cambridge sunday after 21:00 . where are you leaving from ?
assistant
i am leaving from ely .
user
i have train tr4205 that leaves at 21:35 and will arrive in cambridge at 21:52 . the price per ticket is 3.52 pounds . would you like a ticket for this train ?
assistant
yeah , i need 8 tickets .