i need to get to cambridge after 19:30
user
there are more than 300 trains that arrive in cambridge after 19:30 . what day were you looking to travel and from where ?
assistant
i would be leaving from london liverpool street on saturday .
user
yes i have a train leaving from liverpool street that will arrive in cambridge at 19:39 . would you like me to book that for you ?
assistant
how long is the travel time , and what is the price for that train please ?