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: 'restaurant'
System: 'What type of food would you like? For example, American, or Traditional.'
User: 'doesnt matter'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'moderately'
System: 'Blue Spice is a great restaurant.'
User: 'moderately priced'
System: 'Caffe Uno, which is in the moderate price range, is a great restaurant.'
User: 'new chesterton area'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'address'
System: 'Hakka is on 24 Milton Road.'
User: 'price of venue'
System: 'Hakka is an outstanding venue. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'good bye'


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 cafe, or a pub.'
User: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'a restaurant'
System: 'What part of town do you have in mind? For example, something in the Arbury, Fen Ditton, or Girton area.'
User: 'restaurant'
System: 'What type of food would you like? For example, pub, English, or Spanish.'
User: 'unintelligible'
System: 'What type of food would you like? For example, Chinese take away, English, or Mediterranean.'
User: 'vegetarian'
System: 'Are you looking for somewhere near a particular venue? For example, the Museum of Classical Archaeology, Sidney Sussex College, or Primavera.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, the People's Portraits Exhibition, or the Ruskin Gallery.'
User: 'hello'
System: 'The Rainbow Cafe, which serves traditional and vegetarian food, is a great restaurant.'
User: 'phone number'
System: 'The phone number of the Rainbow Cafe is 01223321551.'
User: 'sil'
System: 'The Rainbow Cafe is an outstanding restaurant.'
User: 'background noise'
System: 'The Rainbow Cafe is a great restaurant.'
User: 'price'
System: 'The Rainbow Cafe is a great venue. The price for main courses ranges from 7 pounds 95 to 10 pounds 95 and the price for a cappuccino is 1 pound 75.'
User: 'background noise'
System: 'The Rainbow Cafe is a great restaurant.'
User: 'background noise'
System: 'The Rainbow Cafe is an outstanding restaurant.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Chesterton, or King's Hedges area.'
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: 'clicking sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'clicking sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'cafe'
System: 'What type of food would you like? For example, Drinks and snacks only, English, or Fastfood.'
User: 'cafe food'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'fast food'
System: 'Would you like fastfood or X food?'
User: 'cheap'
System: 'Would you like fastfood or X food?'
User: 'cheap'
System: 'Would you like fastfood or X food?'
User: 'unintelligible food'
System: 'Would you like fastfood or X food?'
User: 'x food'
System: 'Would you like fastfood or X food?'
User: 'x food'
System: 'The Cambridge Blue, which is in the cheap price range, is a great cafe.'
User: 'unintelligible food'
System: 'There is no cafe serving fastfood.'
User: 'phone number'
System: 'The Cambridge Blue is located on 24 Regent Street and its phone number is 01223369222.'
User: 'phone number'
System: 'The phone number of the Cambridge Blue is 01223369222.'
User: 'thank you good bye'


SOLUTION:
Cheap