i would like a train leaving from london liverpool street on wednesday , please .
user
of course . what s your destination ? also when do you wish to leave and arrive by ?
assistant
i am going to cambridge & leaving after 11:15 .
user
i have an 11:39 . would you like me to book that for you ?
assistant
i would like the train id , price , and arrival time please .
user
the train id is tr4161 , price is 16.60 and arrival time is 13:07 . would you like me to book that for you ?
assistant
yes , when is the arrival time on that ? and how much for 1 ticket ?