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: '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 pub.'
User: 'im looking for a rest'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'a restaurant'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Indian, or International.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'american'
System: 'Are you looking for somewhere near a particular venue? For example, Hughes Hall, Little Saint Mary's, or The Fitzwilliam Museum.'
User: 'american'
System: 'What part of town do you have in mind? For example, something in the Arbury, Cherry Hinton, or Romsey area.'
User: 'city center'
System: 'Gourmet Burger , which is in the central part of town, is an outstanding restaurant. It serves american food.'
User: 'address'
System: 'Gourmet Burger  is on 43-45 Regent Street.'
User: 'three two four five begent'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'and the price'
System: 'Gourmet Burger  is an outstanding venue. The price for main courses ranges from 3 pounds 95 to 8 pounds 45.'
User: 'ok thank you'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'is it burger gourmet'
System: 'Gourmet Burger  is a great restaurant.'
User: 'sil'
System: 'Gourmet Burger , which is in the central part of town, is an outstanding restaurant. It serves american food.'
User: 'thank you'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'sil'
System: 'Gourmet Burger  is an outstanding restaurant.'
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: 'noise sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'nosie sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'noise im looking for a restaurant that serves pub food'
System: 'What type of food would you like? For example, Fusion, Japanese, or Turkish.'
User: 'im looking for a restaurant'
System: 'Would you like a trumpington area, or you don't care?'
User: 'id like pub food'
System: 'There is no restaurant in the Trumpington area and serving pub food.'
User: 'i dont care'
System: 'Can I help you with anything else?'
User: 'i dont care'
System: 'Blue Spice is a great restaurant.'
User: 'yes'
System: 'Let me confirm. You don't care about the location. You are looking for a venue.'
User: 'im looking for a pub food restaurant'
System: 'The Fountain Inn is a great restaurant and it serves pub food.'
User: 'im looking for a restaurant'
System: 'The Fountain Inn is an outstanding restaurant and it serves pub food.'
User: 'is it in the expensive price range'
System: 'The Fountain Inn is an outstanding venue. The price for main courses ranges from 4 pounds 95 to 7 pounds 95 and the price for a glass of wine ranges from 3 pounds to 4 pounds 50 and the price for a cheapest pint of beer is 2 pounds.'
User: 'is it in the expensive price range'
System: 'The Fountain Inn is a great venue. The price for main courses ranges from 4 pounds 95 to 7 pounds 95 and the price for a glass of wine ranges from 3 pounds to 4 pounds 50 and the price for a cheapest pint of beer is 2 pounds.'
User: 'id like to start over please'
System: 'Revolution, which serves pub food, is an outstanding restaurant. It's in the expensive price range.'
User: 'start over'
System: 'Revolution is an outstanding restaurant, it serves pub food and it's in the expensive price range.'
User: 'what is its phone number'
System: 'The phone number of Revolution is 01223364895.'
User: 'what is its phone number'
System: 'The phone number of Revolution is 01223364895.'
User: 'what is its post code'
System: 'Revolution is in the area with the postcode CB2 3DS.'
User: 'what is the post code'
System: 'Revolution is in the area with the postcode CB2 3DS.'
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: 'i want to find an expensive seafood restaurant'
System: 'Loch Fyne, which serves seafood, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address and phone number'
System: 'Loch Fyne is located on 37 Trumpington Street and its phone number is 01223902103.'
User: 'what is the cost'
System: 'Loch Fyne is in the riverside part of town.'
User: 'how much does it cost'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'thank you goodbye'


SOLUTION:
Expensive

