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 Q]: 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 is a great restaurant, it serves thai food and it's in the expensive price range.'
User: 'what is the address'
System: 'The Wrestlers is 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: 'whats the phone number'
System: 'The phone number of The Wrestlers is 01223566554.'
User: 'and what is the post code'
System: 'The Wrestlers is in the area with the postcode CB5 8JE.'
User: 'thank you goodbye'

[EX A]: Expensive

[EX Q]: 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'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'cheap coffee shop'
System: 'What part of town do you have in mind? For example, King's Hedges, or Newnham.'
User: 'it doesnt matter'
System: 'Clowns, which is in the cheap price range, is a great cafe. It's an outstanding restaurant.'
User: 'what is the address'
System: 'Clowns is located on 54 King Street.'
User: 'and what is the price'
System: 'Clowns is an outstanding venue. The price for main courses ranges from 5 pounds to 11 pounds and the price for a cappuccino is 1 pound 50.'
User: 'thank you good bye'

[EX A]: Cheap

[EX Q]: 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 pub food restaurant'
System: 'What part of town do you have in mind? For example, something in the central, Girton, or Romsey area.'
User: 'any part of town'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanic Garden, the Lynne Strover Gallery, or Milton Country Park.'
User: 'no'
System: 'The Fountain Inn, which serves pub food, is a great restaurant.'
User: 'what is the phone number'
System: 'The phone number of The Fountain Inn is 01223366540.'
User: 'sil'
System: 'The Fountain Inn is a great restaurant. It serves pub food.'
User: 'what is price of the venue'
System: 'The Fountain Inn is an outstanding venue. The price for main courses ranges from 4 pounds 95 to 7 pounds 95 and the price for a glass of wine ranges from 3 pounds to 4 pounds 50 and the price for a cheapest pint of beer is 2 pounds.'
User: 'thank you goodbye'

[EX A]:
Moderate