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: 'i want to find a spanish restaurant with a cheap price range'
System: 'La Raza is an outstanding restaurant. It serves spanish food. It's in the cheap price range.'
User: 'what is the address'
System: 'La Raza is located on 4-6, The Basement, Rose Crescent. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'whats the phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'thank you 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: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'pub'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Fen Ditton, or King's Hedges area.'
User: 'a pub'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Cambridge Contemporary Art, or Kettle's Yard.'
User: 'background noise'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Kettle's Yard, or Williams Art and Antiques.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Romsey, or Trumpington area.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, riverside, or Trumpington area.'
User: 'it doesnt matter'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'castle hill'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'moderate'
System: 'The Alma, which is in the moderate price range, is an outstanding pub.'
User: 'background noise'
System: 'The Anchor, which is in the moderate price range, is a great pub.'
User: 'i need one with a television'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Milton Country Park, or Saint Catharine's College.'
User: 'background noise'
System: 'The Alma is a great pub and it's in the moderate price range.'
User: 'sil'
System: 'The Alma and The Anchor are the only pubs in the moderate pricerange.'
User: 'background noise'
System: 'The Alma and The Anchor are the only pubs in the moderate pricerange.'
User: 'do they have televisions'
System: 'The Baron of Beef, which allows children, is an outstanding pub.'
User: 'the anchor'
System: 'The Avery, which allows children, is a great pub.'
User: 'i want one with a television'
System: 'The Alma, which allows children, is in the moderate price range. It's a great pub.'
User: 'do you have one with a television'
System: 'The Alma, which allows children, is in the moderate price range. It's an outstanding pub.'
User: 'background noise'
System: 'The Bakers, which allows children, is an outstanding pub.'
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: 'i need an english restaurant and it should have expensive price range'
System: 'The Backstreet Bistro, which serves contemporary food, is an outstanding restaurant. It serves english food and it's in the expensive price range.'
User: 'great can i have the number and area please'
System: 'The phone number of the Backstreet Bistro is 01223306306. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
User: 'noise sil'
System: 'The Backstreet Bistro is a great restaurant.'
User: 'noise sil'
System: 'The Backstreet Bistro is a great restaurant, it serves contemporary and english food and it's in the expensive price range.'
User: 'noise sil'
System: 'The Backstreet Bistro, which serves contemporary food, is an outstanding restaurant. This place, which serves english food, is in the expensive price range.'
User: 'can i have the can i have the number and the area please'
System: 'There is no restaurant in the Girton area and serving english food.'
User: 'can i have the number and area please'
System: 'Would you like a girton area, or you don't care?'
User: 'can i have the phone number'
System: 'Would you like a girton area, or you don't care?'
User: 'phone number'
System: 'Would you like a girton area, or you don't care?'
User: 'i dont care'
System: 'Would you like an english food, or you don't care?'
User: 'i dont care'
System: 'The phone number of the Backstreet Bistro is 01223306306.'
User: 'english restaurant'
System: 'Would you like an english food, or you don't care?'
User: 'address please'
System: 'Would you like an english food, or you don't care?'
User: 'english restaurant and the address'
System: 'The Backstreet Bistro is on 2 Sturton Street.'
User: 'and post code'
System: 'The Backstreet Bistro is in the area with the postcode CB1 2QA.'
User: 'very good thank you good bye'


SOLUTION:
Expensive