i am looking for a train departing from stantsted airport going to cambridge .
user
i found 133 train trips , do you have a date and time you would like to travel ?
assistant
i want to leave on wednesday and arrive by 10:15 .
user
there are 5 trains arriving by 10:15 , would you like to book 1 leaving at 8:24 and arriving at 8:52 ?
assistant
yes , that will be good ! i need 8 tickets , please .