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: Perfect, thanks. Could you also tell me if there are any trains from norwich to cambridge that arrive by 10:00 on friday? Sentence2: Is there anything else I can help you with today? Sentence3: Certainly, did you have a particular place in mind? Sentence4: There are four trains arriving before 10:00 on Friday. They leave norwich every hour on the :16 starting at 05:16 to 08:16 Sentence5: Well the travel time for the TR3293 that leaves at 8:01 is 79 minutes. Sentence6: old schools is in trinity lane and entrance is free. can i give you their phone number? Sentence7: Can you help me find places to go in town? Sentence8: That is all I needed have a nice day. Sentence9: An architecture attraction would be good. Sentence10: Can I have the travel time? And the train ID please. Sentence11: What area is trinity lane in? I'd love to find a train going to cambridge as well. Sentence12: Old Schools is located in the centre area of town. Is that location convenient for you? Sentence13: I'm glad I could help. If you think of anything else you need feel free to contact us any time. Sentence14: Great, thank-you! That is perfect. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User