Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: sure its 01223364222 Sentence2: Is there anything more I can help you with? Sentence3: I'm sorry, there are no hotels that meet your criteria. Would you like to try searching for something else? Sentence4: Unfortunately this guest house doesn't offer parking, would you like me to search for similar hotels that offer parking? Sentence5: Have a good day! Sentence6: the a and b guest house is a great place Sentence7: That is all I need. Goodbye. Sentence8: Ok. Thanks. All set. Sentence9: Yes. May I have the phone number? Sentence10: Sorry for the confusion, I have that booked for you, your reference # is: HQSOZLWH . Can I help you with anything else today? Sentence11: how about one that is in the type of nightclub. Sentence12: There's the club ballare which is rather nice. Would you like some more information about it? Sentence13: i need a place to stay in Cambridge thats 4 star with free wifi Sentence14: There are seriously no 4 star hotels with free wifi and free parking in all of Cambridge? I'm pretty sure there should be. Sentence15: Great! Could you book it for 5 people and 3 nights starting from wednesday? Sentence16: Do this hotel offer free parking also? Sentence17: Yes I do. When you find it, I need 3 nights for 5 people starting on Wednesday. I'll take the reference number too. Sentence18: The arbury lodge guesthouse is 4 stars, it has internet it is in the moderate price range Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User