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 Input:
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 am looking for a seafood restaurant in an expensive price range'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'ok thank you what is the address and phone number of the venue'
System: 'Loch Fyne is on 37 Trumpington Street and its phone number is 01223902103. The price for main courses ranges from 9 pounds to 20 pounds.'
User: 'ok thank you good bye'


Ex Output:
Expensive


Ex Input:
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 want to find a contemporary restaurant'
System: 'Let me confirm. You are looking for a contemporary venue.'
User: 'and it should have a cheap price range'
System: 'All Bar One, which serves contemporary food, is an outstanding restaurant. It's in the cheap price range.'
User: 'can you give me the phone number and the price of the venue'
System: 'The phone number of All Bar One is 01223371081. The price for main courses ranges from 7 pounds 95 to 12 pounds 95 and the price for a glass of wine ranges from 2 pounds 85 to 6 pounds 95.'
User: 'thank you good bye'


Ex Output:
Cheap


Ex Input:
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: 'cough'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'expensive restaurant in addenbrookes area'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'expensive'
System: 'What type of food would you like? For example, Contemporary, Middleeastern, or Traditional.'
User: 'middle eastern'
System: 'Are you looking for a pub or a restaurant?'
User: 'restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Artworks, Emmanuel College, or Pembroke College.'
User: 'addenbrookes brookes area'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, the Gallery at twelve A High Street, or the Ruskin Gallery.'
User: 'no'
System: 'The Lucky Star, which is in the Addenbrooke's part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'address'
System: 'The Lucky Star is on Unit.'
User: 'phone number'
System: 'The phone number of the Lucky Star is 01223244277.'
User: 'thank you goodbye cough'


Ex Output:

Expensive


