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: That would be all. Sentence2: I'm looking for a guesthouse to stay at with free wifi included please. Sentence3: Yes please. It needs to be for 4 people for 4 nights starting on Monday. Sentence4: I do not care as long as it is moderately priced and has free parking. Sentence5: Arbury lodge guesthouse is in the north part of town, would you like to book there? Sentence6: I also need to find a place to dine. It should serve British food and be in the moderate price range. Sentence7: your all set, reference #MG7EZ1DS . Anything else today? Sentence8: Okay please book a table for the same group of people at 16:45 on the same day Sentence9: I recommend the Oak Bistro in the center of town. Fantastic food and service! Sentence10: Ok great, have a wonderful day. Sentence11: Sure, is there a particular part of town you'd like to stay in? Sentence12: Great! I've got it booked for you, and your reference number is BDXD5TFL . Is there anything else I can help you with? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User