i want a train that goes to stansted airport and leaves from cambridge .
user
there are many that leave cambridge and go to stansted airport , what day would you like to leave and what time ?
assistant
i need the train to leave after 09:15 on saturday .
user
i have train tr2755 that will leave at 09:40 and put you at the airport by 10:08 . would that work for you ? if not , i have later trains .
assistant
that train works well .
user
would you like me to book this train for you ?
assistant
yes please . get me 8 tickets for my party as well as a reference number .