Definition: 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.
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: 'restaurant'
System: 'What type of food would you like? For example, Chinese take away, Italian, or Vegetarian.'
User: 'sil'
System: 'What type of food would you like? For example, Mexican and Tex Mex, or Northern european.'
User: 'sil'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Chesterton, or Newnham area.'
User: 'dont care'
System: 'What type of food would you like? For example, Contemporary, or Greek.'
User: 'new chesterton'
System: 'What type of food would you like? For example, American, French, or Greek.'
User: 'dont care'
System: 'Hakka, which is in the New Chesterton part of town, is a great restaurant.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Great Saint Mary's Church, or Lamma's Land.'
User: 'sil'
System: 'Hakka is a great restaurant. It's in the New Chesterton part of town.'
User: 'sil'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'new chesterton'
System: 'Hakka is a great restaurant and it's in the New Chesterton part of town.'
User: 'moderate'
System: 'Hakka is an outstanding restaurant, it's in the New Chesterton part of town and it's in the moderate price range.'
User: 'moderate price'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'what is the address'
System: 'Hakka is located on 24 Milton Road.'
User: 'what is the address'
System: 'Hakka is on 24 Milton Road.'
User: 'what is the price range'
System: 'Hakka is in the moderate price range. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'sil'
System: 'Hakka is a great restaurant.'
User: 'what is the price range'
System: 'Hakka is in the moderate price range.'
User: 'background noise'
System: 'Hakka is an outstanding restaurant.'
User: 'thank you good bye'

Output:
Moderate