i am looking for a train that is going to cambridge .
user
there are 1,414 trains to cambridge . where would you like to depart from ?
assistant
i would like to depart from birmingham new street on tuesday .
user
there are 19 trains leaving birmingham new street and arriving at cambridge on tuesday . did you have a specific departure or arrival time ?
assistant
i would like to arrive by 19:30
user
train tr4373 arrives in cambridge at 12:23 . would you like me to book that for you ?
assistant
no , no ticket needed right now . i do need the price and travel time , though .