i am looking for a train from stevanage to cambridge .
user
i have several options . they all leave on friday , do you have a preferred departure time ?
assistant
eww , friday will not really work for me . do you have anything on thursday ?
user
there are 10 trains traveling on thursday . the first train leaves at 05:54 . do you want to book this train or do you want a later departure time ?
assistant
that train sounds good , can you book it for 4 people ?