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: 'hi im looking for a coffee shope'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Corpus Christi, or Sidney Sussex College.'
User: 'serving any kind of food'
System: 'There is no cafe in the Cherry Hinton area.'
User: 'do you have something else'
System: 'There is no cafe in the Cherry Hinton area.'
User: 'im looking for a coffee shop'
System: 'There is no cafe in the Cherry Hinton area.'
User: 'in any area'
System: 'There is no cafe serving indian food.'
User: 'any kind of food what about any kind of food'
System: 'Carringtons is an outstanding cafe and a great restaurant.'
User: 'it should have a moderate price range'
System: 'Carringtons, which is a great cafe and an outstanding restaurant, is in the moderate price range.'
User: 'can i get the phone number'
System: 'The phone number of Carringtons is 01223361792.'
User: 'noise sil'
System: 'Carringtons is a great restaurant.'
User: 'ok give me the phone number'
System: 'The phone number of Carringtons is 01223361792.'
User: 'and the post code please'
System: 'Carringtons is in the area with the postcode CB2 3NZ.'
User: 'thank you 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: 'im looking for a mexican restaurant and it should be very expensive'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, Artworks, or Milton Country Park.'
User: 'no'
System: 'Nanna Mexico, which serves mexican and tex mex food, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address and pnone number'
System: 'Nanna Mexico is on 33 Regent Street and its phone number is 01223902150.'
User: 'thank you goodbye'


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: 'background noise'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
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: 'cheap'
System: 'What kind of venue are you looking for? For example, a pub.'
User: 'chinese'
System: 'Are you looking for a cafe or a restaurant?'
User: 'chinese'
System: 'Are you looking for a cafe or a restaurant?'
User: 'restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Artworks, the Book and Print Gallery, or the Saint Barnabas Press Gallery.'
User: 'restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, the Book and Print Gallery, or the Saint Barnabas Press Gallery.'
User: 'no'
System: 'HK Fusion, which serves chinese food, is a great restaurant. It's in the cheap price range.'
User: 'no'
System: 'HK Fusion, which serves chinese food, is an outstanding restaurant. It's in the cheap price range.'
User: 'background noise'
System: 'HK Fusion, which serves chinese food, is an outstanding restaurant. It's in the cheap price range.'
User: 'number'
System: 'The phone number of HK Fusion is 01223355909.'
User: 'number'
System: 'HK Fusion is an outstanding restaurant.'
User: 'address'
System: 'HK Fusion is on 21 Burleigh Street.'
User: 'address'
System: 'HK Fusion is located on 21 Burleigh Street.'
User: 'address'
System: 'HK Fusion is on 21 Burleigh Street.'
User: 'thank you good bye'


SOLUTION:
Cheap