can you help me find a train leaving on sunday and arriving by 18:15 ?
user
where are you departing from and what is your destination ?
assistant
i am going from cambridge to standsted airport .
user
train tr1526 leaves 17:40 and will get you there by 18:08 . would you like some tickets ?
assistant
yes , that would be great . i'll need tickets for 7 people . i'll also need the reference number .