i need a train from cambridge on tuesday
user
there are plenty of those ! where are you headed , and at what time ?
assistant
i am heading to norwich and need to leave after 11:15 from cambridge
user
there are 13 trains . the 1 that leaves closest to your requested time is the tr5949 , which leaves at 11:36 . does that interest you ?
assistant
yes , that would be great ! i need 7 tickets , please . oh , and the reference number .