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: Thank you. Have a good day. Sentence2: Maybe 15:15 work work then. Could you try that? Sentence3: Yes, I do. I'll be taking the train into Cambridge. Sentence4: I was able to book the train for you. The reference number is 4ITZ3ZMO and the total fee is 140.8 GBP payable at the station. Sentence5: Your booking was successful. You have a table reserved for 15 minutes. Your reference number is BVU9ETYF . Sentence6: I am looking for an expensive Italian restaurant. Sentence7: I'm sorry, I'm unable to book you a table at 16:15. Would you like to try another time? Sentence8: Sounds good. Could you book me a reservation for 8, Friday, at 16:15? Sentence9: Great, thanks! Can you also help me find a train departing norwich arriving by 11:45? Sentence10: Did you want that train for Friday? Sentence11: How about Cafe Uno, in the centre of town, 32 Bridge Street City Centre Sentence12: There are 6 trains leaving to Cambridge on Friday. We have one leaving at 10:16 and arriving by 11:35. Would that be okay? Sentence13: Great! That is all I need today. Sentence14: That would be perfect! Please make a booking for 8 people. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User