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: 'cheap contemporary restaurant'
System: 'All Bar One, which serves contemporary food, is an outstanding restaurant. It's in the cheap price range.'
User: 'phone number'
System: 'The phone number of All Bar One is 01223371081.'
User: 'uh price of venue'
System: 'All Bar One is an outstanding venue. The price for main courses ranges from 7 pounds 95 to 12 pounds 95 and the price for a glass of wine ranges from 2 pounds 85 to 6 pounds 95.'
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 spanish restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'a cheap spanish restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, the Book and Print Gallery, the Ruskin Gallery, or the Whipple Museum of the History of Science.'
User: 'no'
System: 'La Raza, which serves spanish food, is an outstanding restaurant. It's in the cheap price range.'
User: 'sil'
System: 'La Raza, which serves spanish food, is a great restaurant. It's in the cheap price range.'
User: 'no'
System: 'La Raza is a great restaurant and it serves spanish food. It's in the cheap price range.'
User: 'whats the phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'what is the phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'thank you goodbye'

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 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