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: That will work. Can I get the price and the travel time please? Sentence2: Thank you for the information! I don't need anything else. Sentence3: I have results for 17 chinese restaurants, what area are you looking to dine in? Sentence4: Excellent. Do you want the reference number? Sentence5: Yes you can you book it for 6 people at 12:45 on Friday? Sentence6: Great. enjoy your journey. Sentence7: I would like it be located in the Centre area. I like expensive chinese food. Sentence8: Yes, please. I am also looking for a train. Sentence9: I am going to broxbourne and need to leave cambridge so I arrive by 15:00. Sentence10: I have train TR4334 that departs at 13:01 and arrives by 14:01. Do you think that would work for you? Sentence11: Where will you be going to and from? Sentence12: The travel time will be 60 minutes and the price will be 14.32 pounds. Sentence13: I have 4 different restaurants. If you would like a recommendation, The Ugly Duckling is often known as the best in town. Sentence14: Okay. Can you also tell me what day you want to travel? Sentence15: Yes, I would like to travel on Saturday. Sentence16: I would like to book a meal at a chinese restaurant. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User