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: 'a thai restaurant expensive price range'
System: 'The Wrestlers is a great restaurant, it serves thai food and it's in the expensive price range.'
User: 'address and postcode'
System: 'The Wrestlers is located on 337 Newmarket Road and it's in the area with the postcode CB5 8JE. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'thank you and the postcode'
System: 'The Wrestlers is in the area with the postcode CB5 8JE.'
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: 'unintelligible'
System: 'Let me confirm. You are looking for a venue in the Girton area.'
User: 'no'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'im looking for a restaurant in the fen ditton area'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'moderately priced'
System: 'Are you looking for somewhere near a particular venue? For example, Emmanuel College, the Gallery at twelve A High Street, or Williams Art and Antiques.'
User: 'dont care'
System: 'Let me confirm. You don't care about the location and you are looking for a venue.'
User: 'yes'
System: 'The Lion and Lamb, which is in the Fen Ditton part of town, is a great restaurant. It's in the moderate price range.'
User: 'background noise'
System: 'The Lion and Lamb is a great restaurant and it's in the Fen Ditton part of town. It's in the moderate price range.'
User: 'whats the address'
System: 'The Lion and Lamb is on High Street, Milton.'
User: 'unintelligible'
System: 'The Lion and Lamb is an outstanding restaurant.'
User: 'whats the phone number'
System: 'The phone number of The Lion and Lamb is 01223860202.'
User: 'whats the price'
System: 'The Lion and Lamb is a great venue. The price for main courses ranges from 5 pounds to 15 pounds and the price for a cheapest pint of beer is 3 pounds.'
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: 'coughing'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'i am looking for a traditional restaurant with expensive price range'
System: 'Are you looking for somewhere near a particular venue? For example, Kettle's Yard, Pembroke College, or the Scott Polar Museum.'
User: 'no'
System: 'The Riverside Restaurant, which serves traditional food, is an outstanding restaurant. It's in the expensive price range.'
User: 'is that a traditional restaurant'
System: 'The Granta Bar is a great restaurant and it serves traditional food. The price for main courses ranges from 14 pounds 95 to 16 pounds 95.'
User: 'id like something expensive'
System: 'The Riverside Restaurant is an outstanding restaurant, it serves traditional food and it's in the expensive price range.'
User: 'ok give me the address'
System: 'The Riverside Restaurant is on University Centre, Granta Place.'
User: 'background noise'
System: 'The Granta Bar is a great restaurant, it serves traditional food and it's in the expensive price range.'
User: 'ok give me the phone number'
System: 'The phone number of the Granta Bar is 01223902174.'
User: 'thank you good bye'


Expensive