i am planning my trip in cambridge and i need a train . it should arrive by 20:15 and leave on sunday .
user
okay we have got a long list of matches . where did you want to depart from ?
assistant
i would like to depart from cambridge , and i am headed to birmingham new street .
user
there is a 16:40 that will arrive at 19:23 . there are also plenty of earlier trains if you would like to arrive much earlier .
assistant
that sounds great , could you make the reservation for me ?