could you help me find a train to norwich ?
user
not a problem . where are you departing from , and what day would you like to travel ?
assistant
i want to leave from cambridge on wednesday .
user
what time of day would you like to travel ?
assistant
i do not have a preferred departure time but the train should arrive by 18:15 .
user
tr1871 arrives by 16:55 and tr6838 arrives by 17:55 . they are both the same price . would you like to book 1 of these ?
assistant
book the tr6838 please . i am also looking for a place to stay if you do not mind .