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 have booked the hotel for you. The reference number is FMTZQOT2 . Is there anything else I can help you with? Sentence2: I would like an expensive guesthouse, please. Sentence3: I'm not showing any expensive guesthouses. Would you like me to search for guesthouses that are moderately priced? Sentence4: Yes, I am looking for Indian in the centre. Sentence5: Ok I will book it for you Sentence6: Yes, there are two. Alexander bed and breakfast and el shaddai. Would you like me to book one of those for you? Sentence7: At the el shaddai. Sentence8: No, I am afraid I am not showing any expensive guesthouse in the centre? Would you like to change your search? Sentence9: How many people in the taxi? Sentence10: I need a table for 2 people. Sentence11: i can book el shaddai for you. how many nights will you be staying? Sentence12: Where would you like the taxi to pick you up? Sentence13: I need a table for the same group of people and the same day. Sentence14: Are there any expensive guesthouses in the centre with free parking? Sentence15: There are 110 restaurants in the city. Are you looking for a particular area or cuisine type? Sentence16: I am not seeing that restaurant listed, is there a different one you might like to book? Sentence17: I would like to be picked up at my hotel and I need to be taken to the restaurant by 16:30. Sentence18: Thank you. I will also need a taxi to go between the two places. Sentence19: yeah, let's do el shaddai. Sentence20: Can you book it for me and get a reference number ? Sentence21: Ok great. A restaurant has not been discussed yet. Would you like to book a table? Sentence22: Would you like me to reserve a table for you? Sentence23: How about cheap with the same criteria? Sentence24: Please book the el shaddai for sunday, 2 nights, 2 people. Sentence25: What day would you like this reservation made for? Sentence26: There will be 2 people. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System