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 need to find and expensive restaurant in the trumpington area'
System: 'What type of food would you like? For example, pub, Fusion, or Traditional.'
User: 'traditional'
System: 'What type of food would you like? For example, International, Thai, or Vegetarian.'
User: 'international'
System: 'There is no restaurant in the Trumpington area and serving international food.'
User: 'expensive restaurant in the trumpington area'
System: 'There is no restaurant serving international food in the expensive price range.'
User: 'restaurant in the trumpington area'
System: 'Would you like an international food, or you don't care?'
User: 'dont care'
System: 'The Oak Bistro is a great restaurant, it's in the Trumpington part of town and it's in the expensive price range.'
User: 'thank you good bye'


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 an expensive restaurant in the fenditton area'
System: 'Let me confirm. You don't care about the area and you are looking for a venue.'
User: 'no im looking for an expensive restaurant'
System: 'The Riverside Restaurant, which is in the Fen Ditton part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address'
System: 'The Riverside Restaurant is on Cambridge Regional College, Newmarket Road.'
User: 'what is the post code'
System: 'The Riverside Restaurant is in the area with the postcode CB5 8DZ.'
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 an expensive restaurant in the addenbrookes area'
System: 'What type of food would you like? For example, Chinese, Fusion, or Greek.'
User: 'i dont care'
System: 'The Lucky Star, which is in the Addenbrooke's part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address'
System: 'The Lucky Star is located on Unit.'
User: 'uh whats the phone number'
System: 'Let me confirm. You don't care about the food. You are looking for a venue.'
User: 'correct'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'thats correct'
System: 'Are you looking for a pub or a restaurant?'
User: 'im looking for an expensive restaurant in the addenbrookes area'
System: 'The Lucky Star is on Unit and its phone number is 01223244277.'
User: 'what is the address'
System: 'The Lucky Star is on Unit.'
User: 'what is the postcode'
System: 'The Lucky Star is in the area with the postcode CB1 7DY.'
User: 'sil'
System: 'The Lucky Star is a great restaurant.'
User: 'thank you goodbye'


SOLUTION:
Expensive