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.
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Question: 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 restaurant in the castlehill area'
System: 'What part of town do you have in mind? For example, something in the Chesterton, Romsey, or Trumpington area.'
User: 'the castlehill area'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Chesterton, or Newnham area.'
User: 'castlehill areaif if'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'whats the phone number'
System: 'The phone number of Blue Spice is 01223413337.'
User: 'whats the post code'
System: 'Blue Spice is in the area with the postcode CB1 7DY.'
User: 'thank you goodbye'


Answer: Expensive


Question: 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 continental restaurant with an expensive price range'
System: 'Alimentum, which serves continental food, is a great restaurant. This place, which serves french food, is in the expensive price range.'
User: 'whats the address phone number and postcode'
System: 'Alimentum is located on 152-154 Hills Road, its phone number is 01223413000 and it's in the area with the postcode CB2 8PB. The price for main courses ranges from 17 pounds 50 to 21 pounds and the price for a glass of wine ranges from 6 pounds 50 to 10 pounds 50.'
User: 'thank you good bye'


Answer: Expensive


Question: 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 would like an expensive restaurant in the romsey area'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'may i have the address and phone number'
System: 'The Backstreet Bistro is located on 2 Sturton Street and its phone number is 01223306306.'
User: 'what type of food is served'
System: 'The Backstreet Bistro serves contemporary and english food.'
User: 'thank you good bye'


Answer:
Expensive