i need a train departing from cambridge after 09:30 .
user
there are many trains departing cambridge after 9:30 . to what destination would you like to travel and on which day ?
assistant
i would like to go to norwich on monday .
user
trains leave hourly to norwich . the closest time available is tr8495 , departing 09:36 and arriving 10:55 , with duration 79 minutes and price 17.60 pounds . would you like to book this 1 ?
assistant
yes please book tr8495 .
user
how many tickets do you need ?
assistant
i need 6 tickets for the train ride please . may i also have the reference number ?