i need assistance finding a train departing from cambridge and arriving at london kings cross .
user
we have quite a few options available to you . is there a particular day you are looking to travel ?
assistant
i am leaving after 15:15 on tuesday . what s available then ?
user
i have 4 , what time would you prefer to arrive by ?
assistant
it does not matter .
user
tr0945 leaves on tuesday at 17:00 . would you like me to book it for you ?
assistant
yes please . could you also tell me how much it is & what time it arrives ?