hi there . can you help me find a train schedule ? i need to travel on saturday .
user
yes there are several trains leaving saturday . do you have a particular destination or departure time ?
assistant
yes , i would like the train to leave after 08:30 and i am going to cambridge from london kings cross .
user
we have several options open to you , do you have a particular time you want to arrive by ?
assistant
i would like to leave after 08:30 . do not really care about the arrival time
user
how about the 1 immediately after , at 09:17 ?
assistant
sounds perfect . can you give the details for that train ?