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 won't need to book a table but thank you. For the train I need to leave monday and am headed towards peterborough. Sentence2: I'll need to know how many will be dining, the day and the time you want to dine to book the restaurant. There are several trains leaving cambridge after 13:15. Sentence3: How many tickets do you need? Sentence4: Train TR5901 has a travel time of 50 minutes and has a price of 16.50 pounds Sentence5: Thank you! What part of town is it in? Sentence6: yes and also looking for a train. The train should leave after 13:15 and should depart from cambridge Sentence7: First can I have the price and what the travel time is? Sentence8: They're in the centre of town. They are an expensive restaurant located at 24 Green Street City Centre. Would you like me to book a table for you? Sentence9: I'm not sure how many yet. Thank you for all the information. I'll get back to you. Goodbye. Sentence10: What can you tell me about the bangkok city restaurant? Sentence11: Can you book it for me? Sentence12: it is okey, thanks and good bye too Sentence13: sure their phone number is 01223354382. anything else i can help you with? Sentence14: Okay, I have the TR5901 that leaves at 13:34 and arrives at 14:24 Will that work for you? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User