i need a train arriving in cambridge by 20:45 .
user
there are many trains arriving at cambridge by 20:45 . where would you be departing from , and on which day ?
assistant
i will be departing from stansted airport on wednesday .
user
what time would you like to depart from stansted airport ?
assistant
the departing time is flexible , i just need to get to cambridge by 20:45 please and may i have the price as well ?