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: 'uh a chinese take away restaurant cheap price range'
System: 'Saigon City, which serves chinese take away, is an outstanding restaurant. It's in the cheap price range.'
User: 'may i get their address'
System: 'Saigon City is on 169 High Street, Chesterton. The price for main courses ranges from 4 pounds 60 to 5 pounds 10.'
User: 'may i get their phone number'
System: 'The phone number of Saigon City is 01223356555.'
User: 'thank you good bye'


Ex Output:
Cheap


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: 'im looking for a moderately priced restaurant in the barnwell area'
System: 'What type of food would you like? For example, Drinks and snacks only, International, or Turkish.'
User: 'dont care'
System: 'Caffe Uno is a great restaurant and it's in the moderate price range.'
User: 'is it in the barnwell area'
System: 'Caffe Uno is in the riverside part of town.'
User: 'im looking for something in the barnwell area'
System: 'The Wheatsheaf, which is in the Barnwell part of town, is a great restaurant. It's in the moderate price range.'
User: 'what type of food does it serve'
System: 'The Wheatsheaf serves traditional food.'
User: 'what is the address'
System: 'The Wheatsheaf is on Stow Road, Stow-Cum-Quy.'
User: 'thank you good bye'


Ex Output:

Moderate


