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: 'im looking for a turkish restaurant in the expensive price range'
System: 'What part of town do you have in mind? For example, Chesterton, or Fen Ditton.'
User: 'it doesnt matter'
System: 'The Agora, which serves turkish food, is a great restaurant. It's in the expensive price range.'
User: 'whats the address'
System: 'The Agora is located on 4 King's Parade. The price for main courses ranges from 9 pounds to 11 pounds 50 and the price for a cappuccino is 2 pounds 25.'
User: 'whats the phone number'
System: 'The phone number of The Agora is 01223308448.'
User: 'whats the post code'
System: 'The Agora is in the area with the postcode CB2 1SJ.'
User: 'thank you goodbye'


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: 'im looking for a contemporary restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'cheap price range'
System: 'All Bar One is a great restaurant, it serves contemporary food and it's in the cheap price range.'
User: 'what is the address'
System: 'All Bar One is located on 36 Saint Andrews Street. 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: 'what is the area'
System: 'All Bar One is in the central part of town.'
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: 'international restaurant moderate price range'
System: 'Giraffe, which serves international food, is an outstanding restaurant. It's in the moderate price range.'
User: 'phone number for giraffe'
System: 'Giraffe is located on Christ's Lane and its phone number is 01223300707.'
User: 'postcode for giraffe'
System: 'Giraffe is in the area with the postcode CB1 1NP.'
User: 'thank you goodbye'


Ex Output:

Moderate


