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: Will you need free parking? Sentence2: I will go to any part. Sentence3: What is their phone number? Sentence4: What's a good museum to go to in cambridge? Sentence5: 4 people. Starting saturday, 3 nights. Sentence6: Their phone number is 01223464646, postcode cb21sj and located at 14 king's parade. Admission is free! Can I help with anything else today? Sentence7: May I have how many guest ? Sentence8: That doesn't matter. You can just recommend one and then help me with a booking please Sentence9: Great. Thanks for letting us help you! Sentence10: That's not necessary at all. Thanks. Sentence11: There are 23 museums in Cambridge. What parts of town are you willing to travel to? Sentence12: There are 6 guesthouses that meet your requirements. Do you prefer a cheap or moderate price range? Sentence13: I recommend visiting the Byard Art museum in the south. It's free to get in. Their address is 14 King's Parade. Sentence14: Yes please, I am looking for a hotel that has 4 stars and is guesthouse. Preferably in the east with free wifi. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User