i am looking for a restaurant in the centre of cambridge that serves modern american food .
user
i was unable to find any restaurant -s matching that .
assistant
then what about modern european ?
user
i have 4 modern european restaurant -s in the centre . do you have a preference on price range ?
assistant
no , just pick a popular 1 for me and book it for 1 person on tuesday please .
user
i book you a table at riverside brasserie , i will send you the reference number .
assistant
okay what is it ?