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.

[EX Q]: 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: 'looking for an expensive restaurants'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or Girton area.'
User: 'addenbrookes area'
System: 'The Lucky Star, which is in the Addenbrooke's part of town, is a great restaurant. It's in the expensive price range.'
User: 'address'
System: 'The Lucky Star is on Unit.'
User: 'phone number and post code'
System: 'The phone number of the Lucky Star is 01223244277 and it's in the area with the postcode CB1 7DY.'
User: 'unintelligible'
System: 'There is no restaurant in the Addenbrooke's area and serving fusion food.'
User: 'what is the address'
System: 'The Lucky Star is on Unit.'
User: 'what is the address'
System: 'The Lucky Star is on Unit.'
User: 'thank you goodbye'

[EX A]: Expensive

[EX Q]: 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: 'cheap restaurant'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Girton, or Trumpington area.'
User: 'romsey area'
System: 'What type of food would you like? For example, pub, Mediterranean, or Traditional.'
User: 'mediterranean'
System: 'There is no restaurant serving mediterranean food in the cheap price range.'
User: 'traditional'
System: 'There is no restaurant serving traditional food in the cheap price range.'
User: 'pub'
System: 'Would you like a cheap price range, or you don't care?'
User: 'cheap price range'
System: 'Are you looking for a pub or a restaurant?'
User: 'restaurant'
System: 'What type of food would you like? For example, East asian, Seafood, or Vegetarian.'
User: 'east asian'
System: 'There is no restaurant in the Romsey area and serving east asian food.'
User: 'i dont care'
System: 'There is no restaurant in the Romsey area and serving east asian food.'
User: 'cheap food'
System: 'Would you like a romsey area, or you don't care?'
User: 'romsey area'
System: 'Would you like an east asian food, or you don't care?'
User: 'i dont care'
System: 'The Royal Standard, which is in the Romsey part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'phone number'
System: 'The phone number of the Royal Standard is 01223902175. The price for main courses ranges from 4 pounds 75 to 7 pounds 50.'
User: 'post code'
System: 'The Royal Standard is in the area with the postcode CB1 3NL.'
User: 'thank you good bye'

[EX A]: Cheap

[EX Q]: 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 free.'
User: 'i want a moderately priced restaurant in the new chesterton area'
System: 'Are you looking for a venue in the Chesterton or New Chesterton area?'
User: 'a moderately priced restaurant in the new chesterton area'
System: 'Hakka is an outstanding restaurant. It's in the New Chesterton part of town. It's in the moderate price range.'
User: 'whats the address'
System: 'Hakka is on 24 Milton Road.'
User: 'and whats the price'
System: 'Hakka is a great venue. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'yawning'
System: 'Hakka is an outstanding restaurant.'
User: 'unintelligible'
System: 'Hakka is a great restaurant.'
User: 'whats the price'
System: 'Hakka is an outstanding venue. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'background noise'
System: 'Hakka is a great restaurant.'
User: 'thanks bye'

[EX A]:
Moderate