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: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a pub.'
User: 'i am looking for a moderately priced'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'pub'
System: 'The Anchor, which is in the moderate price range, is a great pub.'
User: 'i am looking for a moderately priced pub'
System: 'The Anchor, which is in the moderate price range, is a great pub.'
User: 'does it have a tv'
System: 'The Anchor has a television.'
User: 'does it have a v'
System: 'The Anchor is an outstanding pub.'
User: 'ah what'
System: 'The Anchor is a great pub.'
User: 'whats the address phone number'
System: 'The Anchor is on Silver Street.'
User: 'what is the address'
System: 'The Anchor is on Silver Street.'
User: 'whats the phone number'
System: 'The phone number of The Anchor is 01223353554.'
User: 'are children allowed'
System: 'The Anchor, which allows children, is in the moderate price range. It's an outstanding pub.'
User: 'thank you good bye'


Ex Output:
Moderate


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 an expensive restaurant in the romsey area'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'whats the address'
System: 'The Backstreet Bistro is on 2 Sturton Street.'
User: 'whats the price'
System: 'The Backstreet Bistro is a great venue. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
User: '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 chinese take away restaurant in the cheap price range'
System: 'Would you like chinese or X food?'
User: 'chinese'
System: 'Would you like chinese or X food?'
User: 'chinese'
System: 'HK Fusion is an outstanding restaurant, it serves chinese food and it's in the cheap price range.'
User: 'whats the address'
System: 'HK Fusion is on 21 Burleigh Street. The price for main courses ranges from 5 pounds to 8 pounds.'
User: 'whats the phone number'
System: 'The phone number of HK Fusion is 01223355909.'
User: 'whats the area'
System: 'HK Fusion is in the Cherry Hinton part of town.'
User: 'thank you goodbye'


Ex Output:

Cheap