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: 'yes im looking for a cheap chinese take away restaurant'
System: 'Saigon City, which serves chinese take away, is a great restaurant. It's in the cheap price range.'
User: 'may i get the address'
System: 'Saigon City is on 169 High Street, Chesterton.'
User: 'may i have the phone number'
System: 'The phone number of Saigon City is 01223356555.'
User: 'may i get the postal code of the venue'
System: 'Saigon City is in the area with the postcode CB4 1NL.'
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: 'system'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'yes im looking for a cheap restaurant and it should be in the cit centre city centre area'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Fen Ditton, or Girton area.'
User: 'city centre area'
System: 'La Raza is an outstanding restaurant, it's in the central part of town and it's in the cheap price range.'
User: 'whats the address'
System: 'La Raza is located on 4-6, The Basement, Rose Crescent.'
User: 'whats the phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'whats the price'
System: 'La Raza is an outstanding venue. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'thank you goodbye'


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: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'an expensive restaurant in the fen ditton area'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'expensive'
System: 'The Riverside Restaurant, which is in the Fen Ditton part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'expensive'
System: 'The Riverside Restaurant, which is in the Fen Ditton part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address'
System: 'The Riverside Restaurant is located on Cambridge Regional College, Newmarket Road.'
User: 'what is the phone number'
System: 'The phone number of the Riverside Restaurant is 01223418997.'
User: 'what it the type of food of the venue'
System: 'The Riverside Restaurant serves contemporary food.'
User: 'thank you good bye'


Ex Output:

Expensive