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 are 8 guesthouses with your preferences. Will you be needing internet or parking? Sentence2: Sure, I'd recommend the Royal Spice restaurant. Would you like to book a table? Sentence3: Sure thing! It is P4ZW4FGI . Sentence4: Great! I have a red honda picking you up. Your contact number is 07485551349. Is there anything else I can assist you with? Sentence5: Royal spice, please Sentence6: Yes that sounds great. There will be 4 of us and we'd like the table for 15:15 on Saturday, please. Sentence7: There are 22 results for Indian restaurants, do you have a particular price range in mind, or area you'd like to dine in? Sentence8: There will be 4 people checking in and staying two nights starting from the same day. I will also need a taxi to arrive at the restaurant ontime and the hotel. Sentence9: Ok great, can we get a taxi booked now? I need it to get me to the restaurant by the time we booked. Sentence10: Let's get your hotel booked and then we will do the taxi. I have you booked at Archway House on Saturday. Reference number is C1419C84 . Sentence11: Hi, I'll be traveling to Cambridge soon and would like to find a restaurant that serves Indian food. Sentence12: I think that will be all for now, thanks. Bye. Sentence13: We were able to book that table for you! Would you like your reference number? Sentence14: Yes, I do need that number, please. Sentence15: I'm glad help and hope you have a pleasant trip. Sentence16: I can try to get you a booking at Archway House. What day will you be checking in, how many will be staying, and for how many nights? Sentence17: yes both. reference number please? Sentence18: How about a cheap indian restaurant located in the north please. Sentence19: Where would you like to taxi to pick you up from? Sentence20: Great I also am looking for a place to stay that has a 4 star rating in the north part of town Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User