The input is a conversation between an automated system and a user looking for suggestions for pubs, restaurants and coffee shops in Cambridge. In the dialogue, the user may provide some criteria for the type of place they want such as price range, cuisine, etc. Given such a dialogue, output the price range the user if looking for which can take one of four values: Cheap, Moderate, Expensive and Don't Care. Output cannot be any other value than the four values. Note that if the user asks for the prices of items provided at a pub, restaurant or coffee shop but doesn't mention the price range they are looking for then the correct classification will be Don't Care. If the user does not mention a particular price, the correct classification will be Don't Care.

System: 'Thank you for calling the Cambridge Information system. Your call will be recorded for research purposes. You may ask for information about a place to eat, such as a restaurant, a pub, or a cafe. How may I help you?'
User: 'yes im looking for a cheap chinese take away restaurant'
System: 'Saigon City, which serves chinese take away, is a great restaurant. It's in the cheap price range.'
User: 'may i get the address'
System: 'Saigon City is on 169 High Street, Chesterton.'
User: 'may i have the phone number'
System: 'The phone number of Saigon City is 01223356555.'
User: 'may i get the postal code of the venue'
System: 'Saigon City is in the area with the postcode CB4 1NL.'
User: 'thank you good bye'

Cheap

System: 'Thank you for calling the Cambridge Information system. Your call will be recorded for research purposes. You may ask for information about a place to eat, such as a restaurant, a pub, or a cafe. How may I help you?'
User: 'im looking for a cheap restaurant in the girton area'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'sil'
System: 'What type of food would you like? For example, American, Contemporary, or Vegetarian.'
User: 'i dont care what type of food'
System: 'The Dojo Noodle Bar is an outstanding restaurant. It's in the Girton part of town. It's in the cheap price range.'
User: 'unintelligible what is the address and postcode'
System: 'The Dojo Noodle Bar, which is in the area with the postcode CB2 1RQ, is on Miller's Yard.'
User: 'sil'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'sil'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'thank you goodbye'

Cheap

System: 'Thank you for calling the Cambridge Information system. Your call will be recorded for research purposes. You may ask for information about a place to eat, such as a restaurant, a pub, or a cafe. How may I help you?'
User: 'im looking for a free restaurant and aquire the phone number and address'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'for free'
System: 'Let me confirm. You are looking for a venue with a television.'
User: 'yes'
System: 'Are you looking for a venue with an internet connection?'
User: 'uh yes'
System: 'Are you looking for a venue with an internet connection?'
User: 'yes i am'
System: 'The Bakers is a great pub with an internet connection and a television.'
User: 'ok can i have the phone number and the address'
System: 'The Bakers is on 176 East Road and its phone number is 01223304121.'
User: 'thank you good bye'


Expensive