Teacher: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.
Teacher: Now, understand the problem? Solve this instance: 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 greek restaurant i dont care about the price range'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'moderate'
System: 'What part of town do you have in mind? For example, something in the Girton, New Chesterton, or riverside area.'
User: 'riverside'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Continental, or Turkish.'
User: 'greek restaurant'
System: 'There is no restaurant in the riverside area and serving greek food.'
User: 'find me a greek restaurant'
System: 'There is no restaurant in the riverside area and serving greek food.'
User: 'find me a greek restaurant i dont care where is'
System: 'The Eraina Taverna is a great restaurant and it serves greek food. It's in the moderate price range.'
User: 'address and phone number and price please'
System: 'The Eraina Taverna is located on 2 Free School Lane and its phone number is 01223902126. The price for main courses ranges from 6 pounds 50 to 13 pounds 95.'
User: 'thank you and goodbye'

Student:
Don't Care