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.

[EX Q]: 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 in the girton area'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'sil'
System: 'What type of food would you like? For example, American, Contemporary, or Vegetarian.'
User: 'i dont care what type of food'
System: 'The Dojo Noodle Bar is an outstanding restaurant. It's in the Girton part of town. It's in the cheap price range.'
User: 'unintelligible what is the address and postcode'
System: 'The Dojo Noodle Bar, which is in the area with the postcode CB2 1RQ, is on Miller's Yard.'
User: 'sil'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'sil'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'thank you goodbye'

[EX A]: Cheap

[EX Q]: 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 romsey area'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address and price'
System: 'The Backstreet Bistro is located on 2 Sturton Street. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
User: 'thank you goodbye'

[EX A]: Expensive

[EX Q]: 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: 'what is a greek restaurant thats expensive'
System: 'The Varsity, which serves greek food, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address'
System: 'The Varsity is located on 35 Saint Andrew's Street.'
User: 'what is the area'
System: 'The Varsity is in the Girton part of town.'
User: 'thank you good bye'

[EX A]:
Expensive