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 an expensive restaurant and it should be in the addenbrookes area'
System: 'Are you looking for somewhere near a particular venue? For example, Sidney Sussex College, Williams Art and Antiques, or Primavera.'
User: 'i dont care'
System: 'The Lucky Star is an outstanding restaurant, it's in the Addenbrooke's part of town and it's in the expensive price range.'
User: 'whats the address'
System: 'The Lucky Star is on Unit.'
User: 'what type of food'
System: 'The Lucky Star serves chinese food.'
User: 'thank you good bye'

Student:
Expensive