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: 'background noise'
System: 'What kind of price range are you looking for? For example, cheap, 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, a pub, or a restaurant.'
User: 'east asian restaurants'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'east asian restaurants'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'east asian restaurants'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'background noise'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'background noise'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'east asian'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'east asian restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'cheap'
System: 'There is no restaurant serving east asian food in the cheap price range.'
User: 'cheap'
System: 'There is no restaurant serving east asian food in the cheap price range.'
User: 'background noise'
System: 'Would you like an east asian food, or you don't care?'
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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'spanish restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'cheap'
System: 'Let me confirm. You are looking for a venue in the cheap price range.'
User: 'cheap'
System: 'What type of food would you like? For example, Cafe food, Fastfood, or Greek.'
User: 'spanish'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Cafe Jello, or the Ruskin Gallery.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Romsey, or Trumpington area.'
User: 'none'
System: 'What part of town do you have in mind? For example, Castle Hill, or Fen Ditton.'
User: 'none'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Newnham, or Romsey area.'
User: 'none'
System: 'What type of food would you like? For example, East asian, French, or Japanese.'
User: 'castle hill'
System: 'What part of town do you have in mind? For example, something in the Girton, New Chesterton, or Trumpington area.'
User: 'spanish'
System: 'There is no restaurant serving english food in the cheap price range.'
User: 'castle hill'
System: 'Let me confirm. You are looking for an english venue.'
User: 'goodbye'


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 an expensive restaurant in trumpington area'
System: 'The Oak Bistro, which is in the Trumpington part of town, is a great restaurant. It's in the expensive price range.'
User: 'can i have the telephone number and address please'
System: 'The Oak Bistro is located on 6 Lensfield Road. Its phone number is 01223323361.'
User: 'i need the address'
System: 'The Oak Bistro is located on 6 Lensfield Road.'
User: 'thank you goodbye'


SOLUTION:
Expensive

