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.

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 expensive restaurant in the addenbrookes area'
System: 'Would you like a venue with a cheap or expensive price range?'
User: 'expensive'
System: 'What type of food would you like? For example, Cafe food, or Fusion.'
User: 'fusion'
System: 'Would you like a venue with an expensive pricerange or with no entrance fee?'
User: 'expensive'
System: 'What type of food would you like? For example, East asian, Fusion, or Spanish.'
User: 'fusion'
System: 'What type of food would you like? For example, International, Spanish, or Turkish.'
User: 'international'
System: 'There is no restaurant in the Addenbrooke's area and serving international food.'
User: 'fusion'
System: 'Would you like an addenbrooke's area, or you don't care?'
User: 'addenbrookes'
System: 'Would you like an international food, or you don't care?'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the central, Romsey, or Trumpington area.'
User: 'addenbrookes'
System: 'What part of town do you have in mind? For example, something in the central, Newnham, or Trumpington area.'
User: 'central'
System: 'Blue Spice, which is in the expensive price range, is an outstanding restaurant.'
User: 'thank you goodbye'

Expensive

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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'can i find a cheap restaurant'
System: 'What type of food would you like? For example, Contemporary, Indian, or Seafood.'
User: 'in cherry hinton area'
System: 'Spice Merchants, which is in the Cherry Hinton part of town, is a great restaurant. It's in the cheap price range.'
User: 'can i get the address and the phone number'
System: 'Spice Merchants is on 60 Trumpington Road and its phone number is 01223843436.'
User: 'thank you goodbye'

Cheap

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: 'italian restaurant expensive'
System: 'Ask, which serves italian food, is a great restaurant. It's in the expensive price range.'
User: 'address'
System: 'Ask is located on 12 Bridge Street.'
User: 'phone number'
System: 'The phone number of Ask is 01223364917.'
User: 'price'
System: 'Ask is an outstanding venue. The price for main courses ranges from 6 pounds 25 to 11 pounds 95 and the price for a glass of wine ranges from 4 pounds 85 to 6 pounds 5.'
User: 'children'
System: 'There is no pub in the expensive price range.'
User: 'television'
System: 'Can I help you with anything else?'
User: 'unintelligible'
System: 'Can I help you with anything else?'
User: 'thank you goodbye'


Expensive