i need a train departing cambridge and arriving by 08:15 .
user
train tr5154 is departing cambridge to london liverpool street on friday , leaving at 05:59 and arriving at 07:27 . is this 1 okay ?
assistant
no , i need a train to norwich on saturday .
user
there is a train that runs from cambridge to norwich on saturday and arrives by 07:55 . would you like to book it ?
assistant
that'll work ! what time does it leave and what s the id ?