i am looking for a train .
user
let s start with where you are departing from and where you are going ?
assistant
departing from ely to cambridge .
user
there are quite a few trains from ely to cambridge . on what day will you be traveling , and at what time would you like to depart ?
assistant
it s on tuesday . i need to arrive by 9:30 and need to book for 7 people . could i also get the reference number too ?