hi , can you give me information on trains ? i need to leave from london liverpool street on sunday , heading to cambridge .
user
yes , there are several leaving every 2 hour -s . the ride is 88 minutes long . can i reserve a seat for you ?
assistant
can you reserve a seat for me on a train that arrives at cambridge by 20:30 ?
user
i have 1 arriving at 19:07 would that be okay ?
assistant
yes . what is the price and train id of that 1 ?