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: 'im looking for an expensive restaurant in the fenditton area'
System: 'Let me confirm. You don't care about the area and you are looking for a venue.'
User: 'an expensive restaurant in the fenditton area'
System: 'The Riverside Restaurant is an outstanding restaurant, it's in the Fen Ditton part of town and it's in the expensive price range.'
User: 'what is the address'
System: 'The Riverside Restaurant is located on Cambridge Regional College, Newmarket Road.'
User: 'and the phone number'
System: 'The phone number of the Riverside Restaurant is 01223418997.'
User: 'and what is the type of food'
System: 'The Riverside Restaurant serves contemporary food.'
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: 'im looking for a cheap italian restaurant'
System: 'Clowns, which serves italian food, is an outstanding cafe and a great restaurant. It's in the cheap price range.'
User: 'what is the address and phone number'
System: 'Clowns is on 54 King Street and its phone number is 01223355711.'
User: 'thank you good bye'

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: 'im looking for a cheap restaurant and it should be in the castlehill area'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanic Gardens, the Michaelhouse Centre, or Williams Art and Antiques.'
User: 'no'
System: 'What type of food would you like? For example, Drinks and snacks only, pub, or Fastfood.'
User: 'drinks and snacks'
System: 'There is no restaurant serving drinks and snacks in the cheap price range.'
User: 'anything then'
System: 'There is no restaurant serving drinks and snacks in the cheap price range.'
User: 'im looking for a cheap restaurant that should be in the castlehill area'
System: 'Would you like a drinks and snacks, or you don't care?'
User: 'i dont care'
System: 'La Raza, which is in the cheap price range, is a great restaurant.'
User: 'what is the address'
System: 'La Raza is located on 4-6, The Basement, Rose Crescent.'
User: 'and whats the post code'
System: 'La Raza is in the area with the postcode CB2 3LL.'
User: 'thank you goodbuy'

Example Output:
Cheap