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: 'system'
System: 'Are you looking for a venue with a television?'
User: 'system'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'no for pub food'
System: 'Are you looking for a venue with an internet connection?'
User: 'cheap pub food'
System: 'Are you looking for a venue that allows children?'
User: 'no'
System: 'Are you looking for a venue with an internet connection?'
User: 'no'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'system'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'system'
System: 'The Baron of Beef is an outstanding pub and it's in the cheap price range.'
User: 'thank you goodbye'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
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: 'restaurant fen ditton'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the Arbury, King's Hedges, or Newnham area.'
User: 'dont care'
System: 'Are you looking for somewhere near a particular venue? For example, Gonville and Caius College, Queens' College, or Williams Art and Antiques.'
User: 'unintelligible'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Greek, or International.'
User: 'no'
System: 'What type of food would you like? For example, Continental, or Seafood.'
User: 'dont care'
System: 'Are you looking for a pub or a restaurant?'
User: 'continental'
System: 'Alimentum is a great restaurant and it serves continental and french food.'
User: 'restaurant'
System: 'Alimentum, which serves continental food, is an outstanding restaurant. It serves french food.'
User: 'address'
System: 'Alimentum is on 152-154 Hills Road.'
User: 'address'
System: 'Alimentum is on 152-154 Hills Road.'
User: 'phone number'
System: 'The phone number of Alimentum is 01223413000.'
User: 'postcode'
System: 'Alimentum is in the area with the postcode CB2 8PB.'
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: 'unintelligible'
System: 'Can I help you with anything else?'
User: 'sil'
System: 'Can I help you with anything else?'
User: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'im looking for a moderately priced restaurant in unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'good restaurant'
System: 'What type of food would you like? For example, Chinese take away, Mediterranean, or Traditional.'
User: 'a restaurant'
System: 'What type of food would you like? For example, Chinese take away, Mediterranean, or Seafood.'
User: 'any type of food but it should be in the barnwell area'
System: 'What type of food would you like? For example, Mexican and Tex Mex, pub, or Fastfood.'
User: 'any type of food but it should be in the barnwell'
System: 'The Lion and Lamb, which is in the Fen Ditton part of town, is an outstanding restaurant.'
User: 'moderately priced'
System: 'The Lion and Lamb has a television and it serves pub food. The price for main courses ranges from 5 pounds to 15 pounds and the price for a cheapest pint of beer is 3 pounds.'
User: 'no im looking for a more'
System: 'The Lion and Lamb is a great restaurant.'
User: 'im looking unintelligible'
System: 'The Lion and Lamb, which is in the Fen Ditton part of town, is a great restaurant.'
User: 'barnwell area'
System: 'Would you like english or X food?'
User: 'english food'
System: 'There is no restaurant in the Fen Ditton area and serving english food.'
User: 'any type food'
System: 'Carringtons is a great cafe and an outstanding restaurant. It serves cafe food and english food.'
User: 'it is a moderately priced'
System: 'Carringtons is in the moderate price range.'
User: 'what is the address phone number and postcode'
System: 'Carringtons, which is in the area with the postcode CB2 3NZ, is on 23 Market Street. Its phone number is 01223361792.'
User: 'whats the postcode'
System: 'Carringtons is in the area with the postcode CB2 3NZ.'
User: 'sil'
System: 'Carringtons is an outstanding restaurant.'
User: 'thank you good bye'


SOLUTION:
Moderate