i am looking for a train to stevenage , please .
user
there are 70 trains departing to stevenage . what day would you like to leave ?
assistant
i would like to leave on saturday and would like to arrive by 21:00 to cambridge .
user
i have many options available . may i have the departure site please ?
assistant
i am departing from stevenage . i need to book seats for 8 people to cambridge on a saturday to arrive by 21:00 .
user
i have several trains that will arrive in cambridge by 21:00 what time of day would you prefer to depart ?
assistant
early evening please .
user
could you please specify a precise time you would like to leave .
assistant
close to arriving by 21:00 . i need to book it for 8 people for a saturday .
user
tr6759 leaves stevenage at 19:54 and arrives in cambridge at 20:43 . would you like me to book it ?
assistant
yes , i would like 8 tickets please . may i also have the reference number ? .