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: 'sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'im looking for a cheap pub that has tv'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or Newnham area.'
User: 'im looking for a cheap pub that has a tv'
System: 'The Bakers has a television, it's in the cheap price range and it's an outstanding pub.'
User: 'it doesnt matter'
System: 'Are you looking for somewhere near a particular venue? For example, Cherry Hinton Water Play, the People's Portraits Exhibition, or Primavera.'
User: 'it doesnt matter'
System: 'The Bakers, which is a great pub, is in the cheap price range with a television.'
User: 'no it doesnt matter'


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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe.'
User: 'italian restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, the Ruskin Gallery, or the Saint Barnabas Press Gallery.'
User: 'no'
System: 'Caffe Uno, which serves italian food, is an outstanding restaurant.'
User: 'is it expensive'
System: 'No. Caffe Uno is in the moderate price range.'
User: 'sil'
System: 'Clowns, which serves italian food, is an outstanding cafe and a great restaurant. It's in the cheap price range.'
User: 'im looking for an expensive italian restaurant'
System: 'Clowns, which serves italian food, is an outstanding cafe. This place, which is a great restaurant, is in the cheap price range.'
User: 'im looking for an expensive italian restaurant'
System: 'The Sorrento, which serves italian food, is an outstanding restaurant. It's in the expensive price range.'
User: 'background noise'
System: 'Would you like a venue with a cheap or expensive price range?'
User: 'expensive'
System: 'The Sorrento, which serves italian food, is a great restaurant. It's in the expensive price range.'
User: 'sil'
System: 'The Sorrento is an outstanding restaurant.'
User: 'what is the phone number'
System: 'The phone number of The Sorrento is 01223243533. The price for main courses ranges from 9 pounds to 16 pounds 95.'
User: 'what is the phone number'
System: 'The phone number of The Sorrento is 01223243533.'
User: 'thank you good bye'


SOLUTION:
Expensive

