i need to find a train to take me to stansted airport . can you help me ?
user
i have many trains going to stansted airport . what is your preferred departure and arrival time ?
assistant
the train should leave cambridge on tuesday and arrive by 21.30
user
tr8261 leaves cambridge tuesday at 9:40 and arrives at stansted airport by 10:08 . would you like to buy a ticket ?
assistant
yes i would like to book for 3 and get the reference number if i could .