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: 'yes im looking for an expensive restaurant in the romsey area'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'whats the address'
System: 'The Backstreet Bistro is on 2 Sturton Street.'
User: 'whats the price'
System: 'The Backstreet Bistro is a great venue. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
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: 'sil'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'cheap fusion restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'cheap cheap very cheap'
System: 'The Dojo Noodle Bar, which serves fusion food, is an outstanding restaurant. It's in the cheap price range.'
User: 'i need the address phone number and price'
System: 'The Dojo Noodle Bar is located on Miller's Yard and its phone number is 01223363471. The price for main courses ranges from 5 pounds 70 to 7 pounds.'
User: 'noise'
System: 'The Dojo Noodle Bar is a great restaurant.'
User: 'noise'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'address phone number and price of the venue'
System: 'The Dojo Noodle Bar is on Miller's Yard. Its phone number is 01223363471. The price for main courses ranges from 5 pounds 70 to 7 pounds.'
User: 'thank you goodbye'

[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: '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'

[EX A]:
Expensive

