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: I am looking for a moderately priced restaurant that serves indian food. Sentence2: What is the travel time? Sentence3: Booking was successful. The table will be reserved for 15 minutes. Your Reference number is Q9MQW1Q4 . Sentence4: How many tickets would you like? Sentence5: How about a chinese restaurant in the centre? Sentence6: I can help you with that! What is your destination, and what time are you traveling? Sentence7: There are 4 restaurants to choose from. Do you have a part of town you prefer? Sentence8: Yes, I need a table for 5 people on Tuesday at 12:30. Could I have the reference number as well for that? Sentence9: Actually, I think I'll hold off on that ticket, I don't need it booked but thanks. That's all I need today. Sentence10: The travel time is 60 minutes. Would you like to book a ticket? Sentence11: Ok, I have 3 restaurants that meet your requests, would you like me to book one of them for you? Sentence12: It was a pleasure working with you today. Contact us again if you need any more assistance. Have a great day. Sentence13: I'm sorry, there are no restaurants that match all of your criteria. Would you like to look for a different type of cuisine, area, or price range? Sentence14: I would also like a train on Wednesday, departing from Cambridge Sentence15: Yes, I'd like the restaurant to be in the centre. Sentence16: I want to go broxbourne and I'd like to arrive by 15:30. Sentence17: I have TR5164 departing at 14:01 and arriving in Broxbourne at 15:01, the cost is 17.90 pounds. Would this work for you? Sentence18: Yes that would be great. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User