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: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'a restaurant'
System: 'What type of food would you like? For example, East asian, American, or Thai.'
User: 'dont care'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'cheap'
System: 'Blue Spice is a great restaurant.'
User: 'castle hill area'
System: 'Blue Spice is an outstanding restaurant.'
User: 'in the castle hill area'
System: 'Blue Spice is an outstanding restaurant.'
User: 'castle hill area'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'cheap'
System: 'La Raza, which is in the cheap price range, is a great restaurant.'
User: 'castle hill area'
System: 'Are you looking for somewhere near a particular venue? For example, the Book and Print Gallery, or Holy Trinity Church.'
User: 'no'
System: 'La Raza is an outstanding restaurant and it's in the cheap price range.'
User: 'background noise'
System: 'The Dojo Noodle Bar is a great restaurant and it's in the cheap price range.'
User: 'i need the address'
System: 'The Dojo Noodle Bar is located on Miller's Yard.'
User: 'i need the fo type of food'
System: 'The Dojo Noodle Bar serves fusion food.'
User: 'background noise'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'type of food'
System: 'The Dojo Noodle Bar is a great restaurant.'
User: 'type of food'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'what type of food'
System: 'The Dojo Noodle Bar serves fusion food.'
User: 'thank you good bye'

Solution:
Cheap