Detailed Instructions: 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.
Problem: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 part of town do you have in mind? For example, something in the Barnwell, Girton, or King's Hedges area.'
User: 'addenbrookes area'
System: 'Are you looking for somewhere near a particular venue? For example, Kettle's Yard, Little Saint Mary's, or Wandlebury Country Park.'
User: 'addenbrookes'
System: 'Are you looking for somewhere near a particular venue? For example, the Broughton House Gallery, the Whipple Museum of the History of Science, or Williams Art and Antiques.'
User: 'no'
System: 'Chiquito, which is in the Addenbrooke's part of town, is an outstanding restaurant.'
User: 'expensive restaurant'
System: 'Chiquito, which is in the Addenbrooke's part of town, is a great restaurant. It's in the expensive price range.'
User: 'address phone number and post code please'
System: 'Chiquito, which is in the area with the postcode CB1 7DY, is located on Cambridge Leisure Park. Its phone number is 01223400170.'
User: 'repeat'
System: 'Chiquito is a great restaurant.'
User: 'address phone number and post code'
System: 'Chiquito is on Cambridge Leisure Park, its phone number is 01223400170 and it's in the area with the postcode CB1 7DY.'
User: 'sil'
System: 'Chiquito is a great restaurant.'
User: 'phone number'
System: 'The phone number of Chiquito is 01223400170.'
User: 'phone number'
System: 'The phone number of Chiquito is 01223400170.'
User: 'post code'
System: 'Chiquito is in the area with the postcode CB1 7DY.'
User: 'post code'
System: 'Chiquito is in the area with the postcode CB1 7DY.'
User: 'post code'
System: 'Chiquito is in the area with the postcode CB1 7DY.'
User: 'thank you good bye'

Solution:
Expensive