user_turns: <SILENCE> cheap restaurant german food <SILENCE> phone number address thank you goodbye
system_turns: Hello , welcome to the Cambridge restaurant system . You can ask for restaurants by area , price range or food type . How may I help you ? What kind of food would you like? api_call german R_location cheap cocum is a great restaurant The phone number of cocum is cocum_phone Sure , cocum is on cocum_address  you are welcome