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: There is a train that leaves at 13:17. Sentence2: I'd like to find a swimmingpool on the east side, if possible. Sentence3: Yes, that's train TR0922, it'll be leaving london kings cross at 13:17 and arrived by 14:08. It costs 23.60 pounds and takes 51 minutes. Sentence4: I am leaving ely after 20:15. Sentence5: I have one listing for abbey pool and astroturf pitch. Sentence6: Can you provide more information for that train? Sentence7: I'd like to book a seat on that train. Please provide confirmation. Sentence8: Sure thing where will you be departing from? Sentence9: What is the entrance fee? Sentence10: Your reference number is AY662NLW . Sentence11: Thanks! I also need a train to Cambridge on Wednesday. Sentence12: I'm sorry; I don't have that information. If you'd like to contact them, their phone number is 01223902088. Sentence13: You're welcome, let me know if I can assist with anything else. Sentence14: That's all i need for today. Thanks very much for your help. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System