i am hoping to book a train .
user
where and when are you departing from ?
assistant
i am going to ely from cambridge on sunday . thank you .
user
great , what is your preferred departure or arrival time ?
assistant
i would like to arrive by 20:15 .
user
the first train leaves at 5:50 .
assistant
do you have something that leaves later but still makes the arrival time ?
user
there s a train that arrives at 20:07 . if you do not want to cut it that close , there s an earlier train that arrives at 18:07 .
assistant
give me the arrival time and train id of the earlier train . also find me a cheap restaurant that serves north american food if available or indian food .