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's fine. What time does the train depart, and how long is the ride itself? Sentence2: Thanks! I also need a train to leicester from cambridge. Can you help me with that? Sentence3: Just me, could you confirm the travel and departure time? Sentence4: kymmoy is a Asian oriental place that is expensive and in the centre of town. Sentence5: May I have their phone number, please? Sentence6: What are the nicest restaurants in the center of town? Sentence7: No, thank you. That's all I need today. Sentence8: TR5089 arrives in leicester Saturday at 15:06, would you like to book a ticket? Sentence9: Absolutely. It is 01223311911. Sentence10: The TR5089 leaves at 13:21 and arrives at 15:06. It would cost you 30.23 pounds. Would you still like to book? Sentence11: Yes can you please book this for me and provide me with any other necessary information. Sentence12: The train should leave on saturday and should arrive by 16:00. Sentence13: Have a great day. Sentence14: How many people will be riding? Sentence15: There are several options. What is your departure day and time? Sentence16: The train departs at 13:21. Travel time is 105 minutes. Would you like me to book this for you or is there something else I can help with? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User