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.

Example 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 an expensive seafood restaurant'
System: 'Loch Fyne, which serves seafood, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address and phone number'
System: 'Loch Fyne is located on 37 Trumpington Street and its phone number is 01223902103.'
User: 'what is the cost'
System: 'Loch Fyne is in the riverside part of town.'
User: 'how much does it cost'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'thank you goodbye'

Example Output: Expensive

Example 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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'coughing'
System: 'Can I help you with anything else?'
User: 'sil'
System: 'Can I help you with anything else?'
User: 'restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Little Saint Mary's, the Michaelhouse Centre, or the Regency Gallery.'
User: 'a restaurant'
System: 'Let me confirm. You don't care about the location and you are looking for a venue.'
User: 'sil'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or New Chesterton area.'
User: 'north european'
System: 'Polonia, which serves northern european food, is an outstanding restaurant.'
User: 'barnwell'
System: 'The Wheatsheaf is an outstanding restaurant and it's in the Barnwell part of town.'
User: 'cheap price range'
System: 'The Wheatsheaf is an outstanding restaurant.'
User: 'what is the address'
System: 'The Wheatsheaf is on Stow Road, Stow-Cum-Quy. The price for main courses ranges from 4 pounds to 13 pounds and the price for a cheapest pint of beer is 2 pounds 65.'
User: 'is it in the cheap price range'
System: 'The Wheatsheaf is an outstanding restaurant.'
User: 'what is the address'
System: 'The Wheatsheaf is located on Stow Road, Stow-Cum-Quy. The price for main courses ranges from 4 pounds to 13 pounds and the price for a cheapest pint of beer is 2 pounds 65.'
User: 'what is the address'
System: 'The Wheatsheaf is located on Stow Road, Stow-Cum-Quy.'
User: 'what is the phone number'
System: 'The phone number of the Wheatsheaf is 01223812196.'
User: 'the phone number'
System: 'The phone number of the Wheatsheaf is 01223812196.'
User: 'thank you goodbye'

Example Output: Cheap

Example 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: 'can i find a turkish restaurant unintelligible'
System: 'The Agora is a great restaurant. It serves turkish food. It's in the expensive price range.'
User: 'price range'
System: 'The Agora is an outstanding venue. The price for main courses ranges from 9 pounds to 11 pounds 50 and the price for a cappuccino is 2 pounds 25.'
User: 'i want to find a turkish restaurant'
System: 'The Agora is a great restaurant, it serves turkish food and it's in the expensive price range.'
User: 'in expenso price range'
System: 'The Anatolia Restaurant, which serves turkish food, is a great restaurant. It's in the expensive price range.'
User: 'can i know the address phone number and the postcode'
System: 'The Anatolia Restaurant is on 30 Bridge Street, its phone number is 01223902117 and it's in the area with the postcode CB2 1UJ. The price for main courses ranges from 11 pounds 50 to 15 pounds 95.'
User: 'thank you good bye'

Example Output:
Expensive