Q: 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.
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 pub, or a restaurant.'
User: 'thai restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, the Folk Museum, Kettle's Yard, or the Michaelhouse Centre.'
User: 'background noise'
System: 'What type of food would you like? For example, East asian, or Italian.'
User: 'background noise'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Chinese, or Mediterranean.'
User: 'background noise'
System: 'What type of food would you like? For example, East asian, pub, or Fusion.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, something in the Arbury, Barnwell, or Newnham area.'
User: 'thai'
System: 'What part of town do you have in mind? For example, something in the New Chesterton, Newnham, or Romsey area.'
User: 'expensive price range'
System: 'Blue Spice, which is in the expensive price range, is an outstanding restaurant.'
User: 'thai restaurant'
System: 'The Wrestlers, which serves thai food, is a great restaurant. It's in the expensive price range.'
User: 'address'
System: 'The Wrestlers is located on 337 Newmarket Road. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'thank you good bye'

A:
Expensive