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 would like 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: 'may i have the address and phone number'
System: 'The Backstreet Bistro is located on 2 Sturton Street and its phone number is 01223306306.'
User: 'what type of food is served'
System: 'The Backstreet Bistro serves contemporary and english food.'
User: 'thank you good bye'

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: 'im looking for a middle eastern restaurant'
System: 'Al Casbah is a great restaurant and it serves mediterranean and middleeastern food.'
User: 'what is the price range'
System: 'Al Casbah is in the moderate price range. The price for main courses ranges from 8 pounds 95 to 12 pounds 95.'
User: 'what is the address'
System: 'Al Casbah is located on 62 Mill Road.'
User: 'postcode please'
System: 'Al Casbah is in the area with the postcode CB1 2AS.'
User: 'thank you good bye'

Moderate

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, free, or moderate.'
User: 'a restaurant in newnham'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'any price'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, Clare College, the Ruskin Gallery, or Trinity College.'
User: 'i dont care'
System: 'What type of food would you like? For example, East asian, Northern european, or Traditional.'
User: 'i dont care'
System: 'Blue Spice is an outstanding restaurant.'
User: 'what is the type of food'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'a restaurant in newnham'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'yes'
System: 'Blue Spice serves indian food. Its phone number is 01223413337. The price for main courses ranges from 12 pounds 50 to 12 pounds 50.'
User: 'is it in newnham'
System: 'Blue Spice is in the Girton part of town.'
User: 'restaurant in newnham'
System: 'Let me confirm. You are looking for a venue in the Newnham area.'
User: 'yes'
System: 'The Red Bull is an outstanding restaurant and it's in the Newnham part of town.'
User: 'what type of food'
System: 'The Red Bull serves italian food.'
User: 'what is the address'
System: 'The Red Bull is located on 11 Barton Road, Newnham.'
User: 'thank you good bye'


Don't Care