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.

Ex Input:
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 thai restaurant in the expensive price range'
System: 'The Wrestlers, which serves thai food, is a great restaurant. It's in the expensive price range.'
User: 'can you give me the address and the price of this venue'
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: 'uh thank you goodbye'


Ex Output:
Expensive


Ex Input:
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: 'yes an english restaurant in the expensive price range'
System: 'The Backstreet Bistro is a great restaurant, it serves contemporary and english food and it's in the expensive price range.'
User: 'in what area'
System: 'The Backstreet Bistro is a great venue. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
User: 'whats the phone number'
System: 'The phone number of the Backstreet Bistro is 01223306306.'
User: 'whats the area'
System: 'The Backstreet Bistro is in the Romsey part of town.'
User: 'thank you good bye'


Ex Output:
Expensive


Ex Input:
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 fast food restaurant'
System: 'What part of town do you have in mind? For example, Cherry Hinton, or Newnham.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, the Folk Museum, Emmanuel College, or The Fitzwilliam Museum.'
User: 'i dont know'
System: 'Are you looking for somewhere near a particular venue? For example, Old Schools, or Wandlebury Country Park.'
User: 'unintelligible'
System: 'Are you looking for somewhere near a particular venue? For example, Artworks, Churchill College, or Primavera.'
User: 'no'
System: 'Burger King, which serves fastfood, is an outstanding restaurant.'
User: 'no'
System: 'Burger King is an outstanding restaurant and it serves fastfood.'
User: 'can i have the address'
System: 'Burger King is located on The Grafton Centre.'
User: 'thank you goodbye'


Ex Output:

Cheap


