are there any trains leaving cambridge ?
user
there are many trains leaving cambridge
assistant
i am trying to get to london liverpool street on friday .
user
when would you like to leave ?
assistant
i do not have a preference but i do need to arrive by 14:45 .
user
friday at 5:59 would you like me to book it for you ?
assistant
yes , please book it for 3 people .
user
great . your booking was successful . the reference number is e2998zvm .
assistant
thanks ! now can you help me find an expensive restaurant to go to in the centre ?