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: Okay! Would you like to stay in a guesthouse, or in a hotel? Sentence2: Ali Baba is a Lebanese restaurant in the centre. Would you like for me to book it for you? Sentence3: I am in the mood for Lebanese food. Sentence4: I'm not sure what time I need just yet. Can I get the postcode? Sentence5: How many people will be traveling? Sentence6: Sure. It's cb21nt. What else can I assist you with today? Sentence7: Great. Can you also get me a taxi to take me from Ali Baba to El Shaddai. I want to leave the restaurant by 05:30. Sentence8: Thank you for contacting us at Cambridge TownInfo Centre. Have a good trip. Goodbye. Sentence9: Your reservation for 6 at El Shaddai this Saturday for 6 days 5 nights was successful. Your Reference number is : 6NUZQ2BG . Sentence10: We have over 69 restaurants i the center of town. Do you have any food style or price preference? Sentence11: I just need one taxi. Can you book that for me, please? Sentence12: I'm also in need of a hotel in the same area as the restaurant. Sentence13: No, thank you. That was it for today. Thank you very much for your assistance. Have a good one. Good bye. Sentence14: I need to find a place to eat in the centre, thanks! Sentence15: I have the el shaddai that meets those requirements. Would you like to make reservations? Sentence16: I have booked you a taxi. The contact number is 07167504810, and it will be a black Honda. Anything else for you today? Sentence17: I'm gonna get wild this weekend, find me a zero-star guesthouse with free parking! Sentence18: Definitely! There will be 6 of us, arriving Saturday, and staying for 5 nights. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System