user_turns: <SILENCE> <SILENCE> cheap chinese <SILENCE> <SILENCE> address address phone number 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 ? What part of town do you have in mind? I'm sorry but there is no restaurant serving cuban food What part of town do you have in mind? api_call chinese R_location cheap charlie_chan serves chinese food in the cheap price range charlie_chan is a great restaurant Sure , charlie_chan is on charlie_chan_address The phone number of charlie_chan is charlie_chan_phone  you are welcome