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: 'um hi im looking for an east asian restaurant in an expensive price range'
System: 'What part of town do you have in mind? For example, Cherry Hinton, or central.'
User: 'i dont care'
System: 'Shiraz is an outstanding restaurant, it serves east asian food and it's in the expensive price range.'
User: 'okay what is the address and phone number and the area of the venue'
System: 'Shiraz is located on 84 Regent Street and its phone number is 01223902104. The price for main courses ranges from 9 pounds to 14 pounds 15.'
User: 'okay thank you goodbye'

Solution:
Expensive