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.
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Question: 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: 'noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'noise'
System: 'What kind of venue are you looking for? For example, a restaurant.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'a restaurant'
System: 'What kind of price range are you looking for? For example, moderate.'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'noise'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'expensive'
System: 'What type of food would you like? For example, Cafe food, pub, or Vegetarian.'
User: 'expensive'
System: 'What type of food would you like? For example, pub, American, or Continental.'
User: 'does not matter'
System: 'What type of food would you like? For example, Chinese take away, Contemporary, or Italian.'
User: 'american'
System: 'There is no restaurant serving american food in the expensive price range.'
User: 'italian'
System: 'Would you like an expensive price range, or you don't care?'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, Kettle's Yard, the Michaelhouse Centre, or Primavera.'
User: 'in the addenbrookes area'
System: 'The Sorrento, which is in the Addenbrooke's part of town, is a great restaurant. This place, which serves italian food, is in the expensive price range.'
User: 'what is the address and the post code'
System: 'The Sorrento, which is in the area with the postcode CB1 7AN, is on 196 Cherry Hinton Road. Its phone number is 01223243533.'
User: 'thank you goodbye'


Answer: Expensive


Question: 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: 'yes and mexican'
System: 'Would you like american or X food?'
User: 'restaurant'
System: 'Would you like american or X food?'
User: 'expensive price range'
System: 'Would you like american or X food?'
User: 'yes'
System: 'Would you like american or X food?'
User: 'mexican'
System: 'Are you looking for somewhere near a particular venue? For example, the Technology Museum, Christ's College, or the Lynne Strover Gallery.'
User: 'x food'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, New Chesterton, or Trumpington area.'
User: 'uhm expensive price range'
System: 'Chiquito, which serves mexican and tex mex food, is an outstanding restaurant. It's in the expensive price range.'
User: 'trumpington area'
System: 'There is no restaurant in the Trumpington area and serving mexican and tex mex food.'
User: 'phone number'
System: 'The phone number of Chiquito is 01223400170. The price for main courses ranges from 7 pounds 95 to 15 pounds 95.'
User: 'phone number'
System: 'The phone number of Chiquito is 01223400170.'
User: 'and the address'
System: 'Chiquito is on Cambridge Leisure Park.'
User: 'and the address of the venue'
System: 'Chiquito is on Cambridge Leisure Park.'
User: 'thank you'
System: 'Chiquito is an outstanding restaurant.'
User: 'thank you good bye'


Answer: Expensive


Question: 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: 'breathing'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'expensive restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Corpus Christi, Old Schools, or the Ruskin Gallery.'
User: 'romsey area'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Chesterton, or riverside area.'
User: 'romsey are'
System: 'Are you looking for a venue in the Girton or Romsey area?'
User: 'romsey'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'background noise'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'phone number and postcode'
System: 'The phone number of the Backstreet Bistro is 01223306306 and it's in the area with the postcode CB1 2QA.'
User: 'phone number and postcode'
System: 'The phone number of the Backstreet Bistro is 01223306306 and it's in the area with the postcode CB1 2QA.'
User: 'thank you good bye'


Answer:
Expensive