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: 'i am looking for a cheap restaurant in the addonbrookes area'
System: 'The Peking Restaurant, which is in the Addenbrooke's part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'what is the address'
System: 'The Peking Restaurant is located on Unit 3, The Belvedere, Homerton Street.'
User: 'what is the post code'
System: 'The Peking Restaurant is in the area with the postcode CB2 8NX.'
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: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'restaurant'
System: 'What part of town do you have in mind? For example, Chesterton, or Fen Ditton.'
User: 'castle hill'
System: 'What type of food would you like? For example, Northern european, Chinese, or Indian.'
User: 'expensive'
System: 'What type of food would you like? For example, English, Fusion, or Traditional.'
User: 'expensive'
System: 'What type of food would you like? For example, Cafe food, Drinks and snacks only, or Seafood.'
User: 'um any expensive'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Cherry Hinton, or riverside area.'
User: 'castle hill'
System: 'Are you looking for somewhere near a particular venue? For example, Emmanuel College, Gonville and Caius College, or the Museum of Archaelogy and Anthropology.'
User: 'no'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'no'
System: 'Blue Spice, which is in the expensive price range, is an outstanding restaurant.'
User: 'no castle hill nice restaurant'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'um what is the'
System: 'What part of town do you have in mind? For example, Barnwell, or riverside.'
User: 'phone number and address'
System: 'Blue Spice is on Unit F1, Cambridge Leisure Park, Clifton Way. Its phone number is 01223413337.'
User: 'thank you good bye'

Expensive

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 restaurant'
System: 'What type of food would you like? For example, Northern european, Japanese, or Spanish.'
User: 'um i want a cheap restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Little Saint Mary's, the Whipple Museum of the History of Science, or Williams Art and Antiques.'
User: 'background noise'
System: 'La Raza, which is in the cheap price range, is a great restaurant.'
User: 'sil'
System: 'La Raza is an outstanding restaurant. It's in the cheap price range.'
User: 'um im looking for a restaurant'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'is that in the addenbrookes area'
System: 'The Peking Restaurant is an outstanding restaurant, it's in the Addenbrooke's part of town and it's in the cheap price range.'
User: 'id like it in the addenbrookes area'
System: 'The Peking Restaurant, which is in the Addenbrooke's part of town, is a great restaurant. It's in the cheap price range.'
User: 'um what is the address'
System: 'The Peking Restaurant is on Unit 3, The Belvedere, Homerton Street.'
User: 'what is the address'
System: 'The Peking Restaurant is on Unit 3, The Belvedere, Homerton Street.'
User: 'and what is the postcode'
System: 'The Peking Restaurant is in the area with the postcode CB2 8NX.'
User: 'what is the postcode'
System: 'The Peking Restaurant is in the area with the postcode CB2 8NX.'
User: 'thank you good bye'


Cheap