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: 'im looking for an expensive restaurant in the castle hill area'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Newnham, or Romsey area.'
User: 'ah castle hill area'
System: 'What type of food would you like? For example, Drinks and snacks only, Continental, or International.'
User: 'ah doesnt matter'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'expensive restaurant'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'yes venue'
System: 'Are you looking for somewhere near a particular venue? For example, the Book and Print Gallery, Christ's College, or Pembroke College.'
User: 'no'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'ah sounds good whats the price'
System: 'Blue Spice is an outstanding venue. The price for main courses ranges from 12 pounds 50 to 12 pounds 50.'
User: 'and whats the phone number'
System: 'The phone number of Blue Spice is 01223413337.'
User: 'thank you good bye'


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: 'yes im looking for cheap restaurant in the fenditton area'
System: 'Are you looking for somewhere near a particular venue? For example, the Book and Print Gallery, Christ's College, or the Saint Barnabas Press Gallery.'
User: 'fenditton'
System: 'What part of town do you have in mind? For example, something in the Barnwell, central, or New Chesterton area.'
User: 'fenditton'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Cambridge Contemporary Art, or Cherry Hinton Water Play.'
User: 'fenditton'
System: 'Let me confirm. You are looking for a venue in the Girton area.'
User: 'thats not right'
System: 'Let me confirm. You don't care about the area and you are looking for a venue.'
User: 'fenditton'
System: 'Let me confirm. You don't care about the area. You are looking for a venue.'
User: 'no one want something in fenditton'
System: 'The Milton Park English and Thai Restaurant, which is in the Fen Ditton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'ok can i get the address and post code please'
System: 'The Milton Park English and Thai Restaurant is located on Milton Park Golf Course, Ely Road, Milton and it's in the area with the postcode CB24 6DD. The price for main courses ranges from 4 pounds 50 to 8 pounds 50.'
User: 'ok thank you good the 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: 'i want to find a spanish restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'in the cheap price range'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Downing College, or Trinity College.'
User: 'i dont care about the location'
System: 'La Raza, which serves spanish food, is an outstanding restaurant. It's in the cheap price range.'
User: 'can i get the address the phone number'
System: 'The phone number of La Raza is 01223464550. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'can i get that address'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'thank you goodbye'


SOLUTION:
Cheap