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: 'cheap restaurant'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, central, or Romsey area.'
User: 'fenditton area'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, King's Hedges, or Romsey area.'
User: 'fenditton'
System: 'Are you looking for somewhere near a particular venue? For example, Downing College, Great Saint Mary's Church, or the Michaelhouse Centre.'
User: 'fenditton area'
System: 'What part of town do you have in mind? For example, Castle Hill, or Girton.'
User: 'girton'
System: 'What type of food would you like? For example, Chinese take away, or Indian.'
User: 'it dont matter'
System: 'What part of town do you have in mind? For example, Barnwell, or Girton.'
User: 'girton'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Castle Hill, or King's Hedges area.'
User: 'fenditton area'
System: 'What part of town do you have in mind? For example, something in the Arbury, Cherry Hinton, or Romsey area.'
User: 'noise'
System: 'What part of town do you have in mind? For example, Barnwell, or Trumpington.'
User: 'thank you'
System: 'Can I help you with anything else?'
User: 'thank you goodbye'


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: 'sil'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'a spanish restaurant any price any area'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'a spanish restaurant'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'any'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'unintelligible'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'any price'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'any price'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'i do not care'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'i dont care'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'moderate'
System: 'There is no restaurant serving spanish food in the moderate price range.'
User: 'cheap'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, Clare Hall, or the Michaelhouse Centre.'
User: 'yeah'
System: 'What part of town do you have in mind? For example, Girton, or New Chesterton.'
User: 'any area'
System: 'Are you looking for somewhere near a particular venue? For example, the Folk Museum, Gonville and Caius College, or the Ruskin Gallery.'
User: 'any area'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, Girton, or New Chesterton area.'
User: 'no'
System: 'Are you looking for somewhere near a particular venue? For example, Cherry Hinton Water Play, the People's Portraits Exhibition, or Williams Art and Antiques.'
User: 'uh spanish restaurant any price any area'
System: 'What part of town do you have in mind? For example, something in the Chesterton, Fen Ditton, or Newnham area.'
User: 'a spanish restaurant'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Castle Hill, or central area.'
User: 'any price'
System: 'Are you looking for somewhere near a particular venue? For example, the Broughton House, Castle Galleries, or the Lynne Strover Gallery.'
User: 'no'
System: 'La Raza, which serves spanish food, is an outstanding restaurant. It's in the cheap price range.'
User: 'no'
System: 'La Raza is a great venue. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'what is the address'
System: 'La Raza is located on 4-6, The Basement, Rose Crescent.'
User: 'what is the addre'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'thank you goodbye'


SOLUTION: 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: 'i want to find a pub food restaurant'
System: 'What part of town do you have in mind? For example, something in the New Chesterton, Newnham, or Romsey area.'
User: 'in rosney romsey'
System: 'The Kingston Arms is a great restaurant. It's in the Romsey part of town. It serves pub food.'
User: 'um whats the address'
System: 'The Kingston Arms is located on 33 Kingston Street.'
User: 'and what is the phone number'
System: 'The phone number of The Kingston Arms is 01223319414.'
User: 'ok thank you good bye'


SOLUTION:
Cheap