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: 'im looking for a restaurant in the trumpington area in the expensive price range'
System: 'The Oak Bistro, which is in the Trumpington part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is its address'
System: 'The Oak Bistro is located on 6 Lensfield Road. The price for main courses ranges from 11 pounds 50 to 17 pounds 75.'
User: 'what type of food does it serve'
System: 'The Oak Bistro serves contemporary 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: 'noise sil'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'expensive'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'traditional restaurant'
System: 'What part of town do you have in mind? For example, something in the Girton, riverside, or Romsey area.'
User: 'a traditional restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Downing College, or Great Saint Mary's Church.'
User: 'dont care'
System: 'The Granta Bar, which is in the expensive price range, is a great restaurant. It serves traditional food.'
User: 'no'
System: 'The Granta Bar is a great restaurant, it serves traditional food and it's in the expensive price range.'
User: 'what is the address'
System: 'The Granta Bar is located on University Centre, Granta Place.'
User: 'what is the postal code'
System: 'The Granta Bar is in the area with the postcode CB2 1RU.'
User: 'what is the address'
System: 'The Granta Bar is located on University Centre, Granta Place.'
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 chinese takeaway restaurant in the moderate price range'
System: 'Yippee Noodle Bar is a great restaurant, it serves chinese take away and japanese food and it's in the moderate price range.'
User: 'im a looking for a cheap price range'
System: 'Yippee Noodle Bar, which serves chinese take away, is a great restaurant. This place, which serves japanese food, is in the moderate price range.'
User: 'im looking for a restaurant in the cheap price range'
System: 'Saigon City, which serves chinese take away, is a great restaurant. It's in the cheap price range.'
User: 'what is its address'
System: 'Saigon City is on 169 High Street, Chesterton. The price for main courses ranges from 4 pounds 60 to 5 pounds 10.'
User: 'im looking for an restaurant that serves chinese take away food'
System: 'Saigon City is a great restaurant, it serves chinese take away and it's in the cheap price range.'
User: 'what is its post code'
System: 'Saigon City is in the area with the postcode CB4 1NL.'
User: 'what is its telephone number'
System: 'The phone number of Saigon City is 01223356555.'
User: 'sil'
System: 'Saigon City is an outstanding restaurant.'
User: 'breathing sil'
System: 'Would you like chinese or X food?'
User: 'thank you good bye'


Cheap

