Detailed Instructions: 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.
Problem: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: 'sil'
System: 'The Bakers is an outstanding pub.'
User: 'background noise0'
System: 'Can I help you with anything else?'
User: 'background noise'
System: 'The Alma is an outstanding pub and it's in the moderate price range.'
User: 'cheap restaurant'
System: 'What part of town do you have in mind? For example, something in the Arbury, Castle Hill, or Romsey area.'
User: 'background noise'
System: 'Are you looking for somewhere near a particular venue? For example, Little Saint Mary's, the Museum of Archaelogy and Anthropology, or Primavera.'
User: 'castle hill'
System: 'La Raza is an outstanding restaurant and it's in the cheap price range.'
User: 'background noise im doing this'
System: 'What type of food would you like? For example, Fastfood, Greek, or Middleeastern.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, Cherry Hinton, or Trumpington.'
User: 'address'
System: 'La Raza is on 4-6, The Basement, Rose Crescent and it's in the central part of town.'
User: 'phone number ok thank you'
System: 'The phone number of La Raza is 01223464550.'
User: 'sil'
System: 'What part of town do you have in mind? For example, something in the Arbury, riverside, or Trumpington area.'
User: 'what is the address'
System: 'The Baron of Beef is an outstanding pub and it's in the cheap price range.'
User: 'castle hill area'
System: 'The Baron of Beef is located on Bridge Street and I am sorry but there is no information on its area.'
User: 'k address please'
System: 'The Baron of Beef is on Bridge Street.'
User: 'background noise'
System: 'The Baron of Beef is a great pub.'
User: 'phone number'
System: 'The phone number of The Baron of Beef is 01223505022.'
User: 'price'
System: 'The Baron of Beef is an outstanding venue. The price for main courses ranges from 4 pounds 99 to 7 pounds 99 and the price for a cheapest pint of beer is 2 pounds 55.'
User: 'price'
System: 'The Baron of Beef is a great venue. The price for main courses ranges from 4 pounds 99 to 7 pounds 99 and the price for a cheapest pint of beer is 2 pounds 55.'
User: 'background noise'
System: 'The Baron of Beef is an outstanding pub.'
User: 'thank background noise'
System: 'Are you looking for somewhere near a particular venue? For example, Great Saint Mary's Church, Jesus College, or the Saint Barnabas Press Gallery.'
User: 'thank you good bye'

Solution:
Cheap