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: 'noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'spanish restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'moderate'
System: 'Carringtons serves cafe food and english food. This place, which is a great cafe and an outstanding restaurant, is in the moderate price range.'
User: 'can i have the address'
System: 'Carringtons is located on 23 Market Street.'
User: 'can i have the price venue'
System: 'Carringtons is an outstanding venue. The price for main courses ranges from 4 pounds 25 to 6 pounds 25 and the price for a cappuccino is 1 pound 95.'
User: 'sil'
System: 'Carringtons is an outstanding restaurant.'
User: 'can i have the prices'
System: 'Carringtons is a great venue. The price for main courses ranges from 4 pounds 25 to 6 pounds 25 and the price for a cappuccino is 1 pound 95.'
User: 'thank you goodbye'

Example Output: 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: 'yes im looking for a moderately priced restaurant in the new chesterton area'
System: 'Hakka is an outstanding restaurant, it's in the New Chesterton part of town and it's in the moderate price range.'
User: 'whats the phone number'
System: 'The phone number of Hakka is 01223568988.'
User: 'and whats the postcode'
System: 'Hakka is in the area with the postcode CB4 1JY.'
User: 'thank you bu bye'

Example Output: Moderate

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: 'cheap r cheap restaurant fen ditton area'
System: 'What type of food would you like? For example, Fastfood, Fusion, or Italian.'
User: 'doesnt matter'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'address'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'type of food'
System: 'La Raza is a great restaurant.'
User: 'thank you good bye'

Example Output:
Cheap