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: 'clicking sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'clicking sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'cafe'
System: 'What type of food would you like? For example, Drinks and snacks only, English, or Fastfood.'
User: 'cafe food'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'fast food'
System: 'Would you like fastfood or X food?'
User: 'cheap'
System: 'Would you like fastfood or X food?'
User: 'cheap'
System: 'Would you like fastfood or X food?'
User: 'unintelligible food'
System: 'Would you like fastfood or X food?'
User: 'x food'
System: 'Would you like fastfood or X food?'
User: 'x food'
System: 'The Cambridge Blue, which is in the cheap price range, is a great cafe.'
User: 'unintelligible food'
System: 'There is no cafe serving fastfood.'
User: 'phone number'
System: 'The Cambridge Blue is located on 24 Regent Street and its phone number is 01223369222.'
User: 'phone number'
System: 'The phone number of the Cambridge Blue is 01223369222.'
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: 'breathing sil'
System: 'What kind of venue are you looking for? For example, a cafe.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'uh i would like to find'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'im looking to find a pub food'
System: 'Are you looking for a cafe or a restaurant?'
User: 'i would like find pub food'
System: 'Are you looking for a cafe or a restaurant?'
User: 'in the moderate price range'
System: 'Are you looking for a cafe or a restaurant?'
User: 'i would like to find pub food'
System: 'Are you looking for a cafe or a restaurant?'
User: 'in the moderate price range'
System: 'Are you looking for a cafe or a restaurant?'
User: 'im looking for pub food'
System: 'Are you looking for a cafe or a restaurant?'
User: 'pub'
System: 'Are you looking for a cafe or a restaurant?'
User: 'yes yes'
System: 'Let me confirm. You are looking for a restaurant.'
User: 'im looking for a pub food restaurant'
System: 'The Lion and Lamb, which serves pub food, is a great restaurant. It's in the moderate price range.'
User: 'in the moderate price range'
System: 'The Lion and Lamb, which serves pub food, is a great restaurant. It's in the moderate price range.'
User: 'whats the address'
System: 'The Lion and Lamb is on High Street, Milton.'
User: 'whats the phone number'
System: 'The phone number of The Lion and Lamb is 01223860202.'
User: 'what area is that in'
System: 'The Lion and Lamb is in the Fen Ditton part of town.'
User: 'ok good bye'


SOLUTION: Moderate

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 price range are you looking for? For example, cheap, free, or moderate.'
User: 'cheap'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'cheap coffee shop'
System: 'What type of food would you like? For example, Cafe food, Fusion, or Thai.'
User: 'coffee shop'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Cherry Hinton, or Trumpington area.'
User: 'coffee shop'
System: 'What type of food would you like? For example, American, or French.'
User: 'sil'
System: 'What part of town do you have in mind? For example, Cherry Hinton, or Trumpington.'
User: 'doesnt matter'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Holy Trinity Church, or Saint John's College.'
User: 'none i want to know the address and price'
System: 'What type of food would you like? For example, Continental, Spanish, or Turkish.'
User: 'no'
System: 'What type of food would you like? For example, Drinks and snacks only, East asian, or Chinese.'
User: 'no'
System: 'Are you looking for somewhere near a particular venue? For example, the Book and Print Gallery, Magdalene College, or the Saint Barnabas Press Gallery.'
User: 'coffee'
System: 'Are you looking for somewhere near a particular venue? For example, the Gallery at twelve A High Street, King's College, or the Museum of Archaelogy and Anthropology.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the King's Hedges, riverside, or Trumpington area.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, King's Hedges, or New Chesterton area.'
User: 'none'
System: 'What part of town do you have in mind? For example, Addenbrooke's, or central.'
User: 'thank you very much good bye'
System: 'What type of food would you like? For example, Mediterranean, Traditional, or Vegetarian.'
User: 'thank you very much good bye'


SOLUTION:
Cheap