TASK DEFINITION: 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: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'noise ah hi i am looking for an'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'im loo'
System: 'What kind of venue are you looking for? For example, a restaurant.'
User: 'im looking for a restaurant in castle hill area'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'it shall be an expensive restaurant'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Indian, or Japanese.'
User: 'i would like an indian food'
System: 'What type of food would you like? For example, Drinks and snacks only, International, or Seafood.'
User: 'and i would like to have some drinks'
System: 'What type of food would you like? For example, Cafe food, Mexican and Tex Mex, or Continental.'
User: 'a continental'
System: 'Are you looking for somewhere near a particular venue? For example, the Broughton House, Corpus Christi, or the People's Portraits Exhibition.'
User: 'ya it shall be around castle hill area'
System: 'What type of food would you like? For example, Cafe food, or Middleeastern.'
User: 'a middle eastern'
System: 'There is no restaurant serving middleeastern food in the expensive price range.'
User: 'noise sil'
System: 'There is no restaurant serving middleeastern food in the expensive price range. I can't hear you. There is no restaurant serving middleeastern food in the expensive price range.'
User: 'ok thank you good bye ok thank you good bye'
System: 'Would you like an expensive price range, or you don't care?'
User: 'noise sil'


SOLUTION: Expensive

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: 'i want to find a cheap restaurant and it should be in the romsey area'
System: 'The Royal Standard is a great restaurant, it's in the Romsey part of town and it's in the cheap price range.'
User: 'what is the address phone number and type of food at the venue'
System: 'The Royal Standard is located on 292 Mill Road and its phone number is 01223902175.'
User: 'and the type of food at the venue'
System: 'The Royal Standard serves indian food.'
User: 'thank you good bye'


SOLUTION: Cheap

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: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'coffee shop'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'background noise'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'cheap'
System: 'What part of town do you have in mind? For example, something in the Arbury, Fen Ditton, or New Chesterton area. I can't hear you. What part of town do you have in mind? For example, something in the Arbury, Fen Ditton, or New Chesterton area.'
User: 'arbury'
System: 'Are you looking for somewhere near a particular venue? For example, the Folk Museum, Little Saint Mary's, or Trinity College.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the central, New Chesterton, or Romsey area.'
User: 'central'
System: 'Are you looking for a cafe or a restaurant?'
User: 'coffee shop'
System: 'What part of town do you have in mind? For example, Castle Hill, or Girton.'
User: 'castle hill'
System: 'What type of food would you like? For example, Drinks and snacks only, or English.'
User: 'drink'
System: 'What part of town do you have in mind? For example, something in the Chesterton, Newnham, or Trumpington area.'
User: 'good bye'


SOLUTION:
Cheap