what train can i take to get to cambridge from birmingham new street ?
user
i have many trains that can get you to your destination . what day would you be traveling ?
assistant
i need to leave on friday .
user
i have not found any train that matches your info . can i help you with anything else ?
assistant
i need a train that leaves after 15:00 on friday .
user
where will you be going ?
assistant
i will be going to cambridge .