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: 'american restaurant'
System: 'What kind of price range are you looking for? For example, free.'
User: 'i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, Magdalene College, the People's Portraits Exhibition, or the Saint Barnabas Press Gallery.'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or King's Hedges area.'
User: 'i dont care'
System: 'What type of food would you like? For example, Northern european, Chinese, or Thai.'
User: 'american'
System: 'What type of food would you like? For example, Indian, Seafood, or Traditional.'
User: 'american'
System: 'What type of food would you like? For example, Chinese, Continental, or International.'
User: 'thank you good bye'
System: 'What type of food would you like? For example, Contemporary, International, or Italian.'
User: 'thank you good bye'


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 contemporary restaurant'
System: 'Let me confirm. You are looking for a contemporary venue.'
User: 'and it should have a cheap price range'
System: 'All Bar One, which serves contemporary food, is an outstanding restaurant. It's in the cheap price range.'
User: 'can you give me the phone number and the price of the venue'
System: 'The phone number of All Bar One is 01223371081. The price for main courses ranges from 7 pounds 95 to 12 pounds 95 and the price for a glass of wine ranges from 2 pounds 85 to 6 pounds 95.'
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: 'unintelligible sil'
System: 'Can I help you with anything else?'
User: 'unintelligible sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'sil'
System: 'Can I help you with anything else?'
User: 'a restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Emmanuel College, Old Schools, or the Saint Barnabas Press Gallery.'
User: 'no but i want an american restaurant'
System: 'Gourmet Burger , which serves american food, is a great restaurant.'
User: 'can you give me the address'
System: 'Gourmet Burger  is on 43-45 Regent Street and its phone number is 01223312598.'
User: 'what price range is it in'
System: 'Gourmet Burger , which is in the cheap price range, is on 43-45 Regent Street.'
User: 'what are the cost of the meal there'
System: 'Gourmet Burger  is an outstanding restaurant. It serves american food.'
User: 'good bye thank you'


SOLUTION:
Don't Care