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: 'expensive restaurant in castle hill area'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'expensive'
System: 'What type of food would you like? For example, Drinks and snacks only, pub, or French.'
User: 'any'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, Girton, or riverside area.'
User: 'castle hill area'
System: 'What type of food would you like? For example, Chinese take away, Italian, or Thai.'
User: 'italian'
System: 'What part of town do you have in mind? For example, something in the riverside, Romsey, or Trumpington area.'
User: 'castle hill area'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'expensive'
System: 'Ask is a great restaurant, it serves italian food and it's in the expensive price range.'
User: 'is it in the castle hill area'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Castle Hill, or Newnham area.'
User: 'castle hill'
System: 'Are you looking for somewhere near a particular venue? For example, Little Saint Mary's, Magdalene College, or Pembroke College.'
User: 'no'
System: 'Ask is an outstanding restaurant, it serves italian food and it's in the expensive price range.'
User: 'what is the phone number'
System: 'The phone number of Ask is 01223364917.'
User: 'thank you'
System: 'Ask is a great restaurant.'
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: 'im looking for a moderately priced restaurant in the fen ditton area'
System: 'The Lion and Lamb, which is in the Fen Ditton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'may i have the phone number and address of the lion and lamb'
System: 'The Lion and Lamb is on High Street, Milton. Its phone number is 01223860202.'
User: 'thank you and goodbye'


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: 'beep'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'cheap restaurant'
System: 'What type of food would you like? For example, Chinese take away, Northern european, or Greek.'
User: 'cheap restaurant'
System: 'What type of food would you like? For example, American, Japanese, or Thai.'
User: 'i dont care'
System: 'La Raza is an outstanding restaurant and it's in the cheap price range.'
User: 'castle hill area'
System: 'What part of town do you have in mind? For example, something in the central, Fen Ditton, or Trumpington area.'
User: 'castle hill area'
System: 'Subway is an outstanding restaurant and it's in the cheap price range.'
User: 'address'
System: 'Subway is on 40-42 Mill Road.'
User: 'phone number'
System: 'The phone number of Subway is 01223461323.'
User: 'price'
System: 'Subway is an outstanding venue. The price for main courses ranges from 1 pound 99 to 5 pounds 60.'
User: 'thank you good bye'


SOLUTION:
Cheap

