can you help me find a train that leaves cambridge after 9:45 pm ? thanks .
user
i can help with that . what is the destination and what day would you like to travel ?
assistant
i am going to bishops storford on wednesday . i actually need to leave after 21:45 though .
user
i do not have any trains that match your request .
assistant
that s disappointing . can you recommend a taxi or bus service ?