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: The restaurants are called Curry Prince and the other is Rajmahal. They are both in the moderate price range. Sentence2: Thank you so much, goodbye. Sentence3: I was able to book that for you for 13:30. Your reference number is 9VLGU3GE . Is there anything else I can do for you? Sentence4: I was unable to book for that time, would you like me to try something else? Sentence5: There are two Indian restaurants and one Italian restaurant in that area and price range. Do you have a preference for type of food? Sentence6: Oh, sorry about that! Same as the restaurant, so just 1. Sentence7: Great! I would like to book at table at Curry Prince. Sentence8: Tell me about the Indian restaurants. Sentence9: Just myself, at 14:30 on Thursday, please. Sentence10: I'd be happy to help you with that. What day will you be traveling? Sentence11: I will be leaving on Friday. Sentence12: Please. Can you also provide me with the reference number? Sentence13: The reference number is EMG78YR0 . Sentence14: Before I can book that for you, would you please let me know how many people will be traveling? Sentence15: Okay. TR5853 leaves at 09:29 and arrives at 10:07 would you like me to book that train for you? Sentence16: Can you help me find a place to dine on the east side of the city, please? Something that's moderately priced would be best. Sentence17: Yes, I am also looking for information on trains going from Cambridge to Bishops Stortford. Sentence18: There are 5 trains leaving on Friday. Is there a specific departure or arrival time you would like? Sentence19: Yes, I will need to be at Bishops Stortford before 16:15. Sentence20: How many people will the reservation be for? Sentence21: Thank you for using our system today! Sentence22: How about 13:30? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System