i am looking for a train departing from london liverpool street leaving on thursday .
user
there are 10 trains leaving fro liverpool street on thursday . did you have a departure time in mind ?
assistant
yes , i do not want to leave for cambridge until 15:00 at the earliest .
user
okay , the tr8944 leaves at 15:39 and arrives by 17:07 . would you like me to book tickets for you ?
assistant
yes , for 6 people .