user_turns: <SILENCE> i got to find a cheap restaurant that serves mexican food <SILENCE> is it in the cheap price range is there a cheap restaurant that serves vietnamese food can i please have their phone number no thank you good bye thank you good bye
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 ? api_call mexican R_location cheap chiquito_restaurant_bar serves mexican food . chiquito_restaurant_bar is in the expensive price range thanh_binh is a great restaurant serving vietnamese food and it is in the cheap price range The phone number of thanh_binh is thanh_binh_phone Can I help you with anything else?  you are welcome