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: what about train TR8176 that leaves at 15:35? Sentence2: That sounds perfect. Can you also help me to find a 2 star hotel? Sentence3: Sure, would you like me to book it? Sentence4: I would like to leave after 15:30. Sentence5: That is all I needed. Sentence6: Yes please book it for 8 people for 5 nights Sentence7: What city will you be departing from? Sentence8: I am glad I could help you with your trip. Thank you for using Cambridge TownInfo Centre. Goodbye. Sentence9: Booking was successful and the reference number is 9H9Z3QNC . Is there anything else I can help you with? Sentence10: I would like it to be in the moderate range in price. Sentence11: There are three 2-star hotels; two are moderately priced and one is expensive. Do you have a price preference? Sentence12: I will be leaving from Ely. Sentence13: I have ashley hotel and lovell lodge. Both in the north with internet and parking. Do you have a preference? Sentence14: Can you help me find a train going to cambridge leaving on saturday? Sentence15: I would prefer Ashley hotel. Sentence16: What time would you like to depart? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System