hi can you help me to book a train from london liverpool street ?
user
i certainly can ! i'll need to know your destination , day of travel , and what time you want to leave or arrive by , so i can find a suitable train , ok ?
assistant
i'll be traveling on sunday . i am going from london liverpool street to cambridge .
user
tr2357 leaves london liverpool street at 7:39 and arrives in cambridge at 9:07 . would this work or do you need another time frame ?
assistant
how long is the travel time ?