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, a pub, or a restaurant.'
User: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'a cheap restaurant in girton'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'a restaurant'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'a restaurant'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'background noise'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'is it in girton'
System: 'The Dojo Noodle Bar is in the Girton part of town.'
User: 'what is the phone number and what kind of food'
System: 'The Dojo Noodle Bar serves fusion food and its phone number is 01223363471.'
User: 'background noise'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'what is the phone number'
System: 'The phone number of the Dojo Noodle Bar is 01223363471.'
User: 'background noise'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'background noise'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is a great restaurant. It's in the cheap price range.'
User: 'background noise'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'phone number'
System: 'The phone number of the Dojo Noodle Bar is 01223363471.'
User: 'background noise'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'what type of food'
System: 'The Dojo Noodle Bar serves fusion food.'
User: 'what type of food'
System: 'The Dojo Noodle Bar serves fusion food.'
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: 'id like to know about a cheap restruant in the girton area'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'what is the address'
System: 'The Dojo Noodle Bar is located on Miller's Yard.'
User: 'what is the phone number'
System: 'The phone number of the Dojo Noodle Bar is 01223363471.'
User: 'and what is the post code'
System: 'The Dojo Noodle Bar is in the area with the postcode CB2 1RQ.'
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: 'looking for a thai restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'in a expensive price range'
System: 'Are you looking for somewhere near a particular venue? For example, the Regency Gallery, Wandlebury Country Park, or Primavera.'
User: 'can i have the address to that address and price'
System: 'The Wrestlers, which serves thai food, is a great restaurant. It's in the expensive price range.'
User: 'yes sounds good let me have 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: 'unintelligible thank you goodbye'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Castle Hill, or New Chesterton area.'
User: 'thank you goodbye'


Ex Output:

Expensive