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: Great. I hope you have a lovely day. Sentence2: Can you help me find a place to stay in the east? It does not need to include internet. Sentence3: Thank you and yes. I'd like a train from Cambridge to Leicester for Sunday. Sentence4: I booked you a room at a and b guest house for Friday. Your reference is 2WB08P38 . Is there anything else I can help you with? Sentence5: a and b guest house is a nice option Sentence6: I will be arriving Friday and I need it for 2 nights for 1 person. Sentence7: Thank you. That is all for today. Sentence8: The train leaves at 6:21 and the duration is 105 minutes. Sentence9: What time does it leave, and how long is the ride? Sentence10: Sure! How many people for your stay, when would you like to start your stay, and how long would you like to stay for? Sentence11: Okay! What is the price range that you would like? Sentence12: I need to arrive by 20:15, please. Sentence13: nice! does it have free wifi? Sentence14: Yes it certainly does. Sentence15: That's great, can you make a booking for? Sentence16: Price isn't an issue for me, but the hotel should be four stars Sentence17: TR9187 arrives by 08:06. will that be fine with you? Sentence18: There are several trains matching your criteria. Is there a specific time you would like to arrive by? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User