yes , i would like a train ticket for sunday . i am going to london kings cross .
user
sure . where will you be leaving from ?
assistant
i'll be leaving from cambridge , and i need to get to kings cross by 10:00 .
user
the tr3207 leaves at 07:00 and arrives at 07:51 . would you like that 1 ?
assistant
that sounds good . please book it for 6 people and can i have the reference number ?