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: 'a moderate priced restaurant in new chesterton'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'what is the address and phone number'
System: 'Hakka is on 24 Milton Road and its phone number is 01223568988. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'sil'
System: 'Hakka is an outstanding restaurant.'
User: 'what type of partial'
System: 'Hakka serves chinese food.'
User: 'what type of food'
System: 'Hakka serves chinese food.'
User: 'thank you goodbye'


SOLUTION: Moderate

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: 'background noise'
System: 'What kind of venue are you looking for? For example, a restaurant.'
User: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'im looking for a cheap restaurant in'
System: 'What type of food would you like? For example, Northern european, pub, or Traditional.'
User: 'im looking for a cheap restaurant and it should be in the castle ill harea'
System: 'What type of food would you like? For example, Middleeastern, Turkish, or Vegetarian.'
User: 'traditional'
System: 'Are you looking for somewhere near a particular venue? For example, Artspace, the Book and Print Gallery, or the Museum of Classical Archaeology.'
User: 'middle eastern'
System: 'There is no restaurant in the central area and serving middleeastern food.'
User: 'beeping'
System: 'There is no restaurant serving middleeastern food in the cheap price range.'
User: 'beeping any one'
System: 'La Raza, which is in the central part of town, is a great restaurant. It's in the cheap price range.'
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: 'im looking for a moderately priced restaurant'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Cherry Hinton, or riverside area.'
User: 'should be in the addenbrookes area'
System: 'What type of food would you like? For example, Cafe food, English, or Seafood.'
User: 'english'
System: 'There is no restaurant in the Addenbrooke's area and serving english food.'
User: 'seafoood'
System: 'Would you like seafood or X food?'
User: 'seafood'
System: 'There is no restaurant in the Addenbrooke's area and serving seafood.'
User: 'a moderately priced restaurant'
System: 'Would you like an addenbrooke's area, or you don't care?'
User: 'addenbrookes area moderately priced restaurant'
System: 'There is no restaurant in the Addenbrooke's area and serving seafood.'
User: 'i dont care'
System: 'Would you like a seafood, or you don't care?'
User: 'i dont care'
System: 'Nando's Restaurant, Cambridge Leisure Park, which is in the Addenbrooke's part of town, is a great restaurant. It's in the moderate price range.'
User: 'great address and postcode please'
System: 'Nando's Restaurant, Cambridge Leisure Park, which is in the area with the postcode CB1 7DY, is located on Unit G5, Cambridge Leisure Park, Clifton Way.'
User: 'thank you good bye'


SOLUTION:
Moderate