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.

[EX Q]: 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 an east asian restaurant that should be expensive'
System: 'Are you looking for somewhere near a particular venue? For example, the Broughton House, Downing College, or the Museum of Archaelogy and Anthropology.'
User: 'im looking for an east asian restaurant'
System: 'What part of town do you have in mind? For example, something in the Arbury, Chesterton, or Romsey area.'
User: 'any area'
System: 'Are you looking for somewhere near a particular venue? For example, Corpus Christi, Kettle's Yard, or Pembroke College.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, Great Saint Mary's Church, or Sheep's Green.'
User: 'east asian restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Great Saint Mary's Church, Little Saint Mary's, or Wandlebury Country Park.'
User: 'unintelligible'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, Kettle's Yard, or the Museum of Classical Archaeology.'
User: 'east asian'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Cambridge Contemporary Art, or Saint Catharine's College.'
User: 'kettles yard'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Byard Art, or Milton Country Park.'
User: 'kettles yard'
System: 'Are you looking for somewhere near a particular venue? For example, the Museum of Archaelogy and Anthropology, the People's Portraits Exhibition, or Wandlebury Country Park.'
User: 'thank you goodbye'

[EX A]: Expensive

[EX Q]: 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 want to find a fast food restaurant'
System: 'Would you like fastfood or X food?'
User: 'fast food'
System: 'Burger King, which serves fastfood, is an outstanding restaurant.'
User: 'is it cheap price range'
System: 'Burger King is an outstanding venue. The price for main courses ranges from 1 pound 99 to 6 pounds 79.'
User: 'i need the address and price of venue'
System: 'Burger King is located on The Grafton Centre. The price for main courses ranges from 1 pound 99 to 6 pounds 79.'
User: 'ok thank you good bye'

[EX A]: Cheap

[EX Q]: 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: 'restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'moderate'
System: 'What type of food would you like? For example, Chinese take away, Indian, or Turkish.'
User: 'indian'
System: 'What type of food would you like? For example, Chinese take away, Greek, or Indian.'
User: 'greek'
System: 'The Eraina Taverna, which serves greek food, is an outstanding restaurant. It's in the moderate price range.'
User: 'kings hedges area'
System: 'There is no restaurant in the King's Hedges area and serving greek food.'
User: 'turkish food'
System: 'There is no restaurant in the King's Hedges area and serving turkish food.'
User: 'traditional food'
System: 'Would you like a king's hedges area, or you don't care?'
User: 'kingss hedges area'
System: 'There is no restaurant in the King's Hedges area and serving traditional food.'
User: 'thank you good bye'

[EX A]:
Moderate

