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: Yes, I need some information about a restaurant called pizza express. Sentence2: Great I also need a taxi that will get me from the pool to the restaurant by 17:00. Sentence3: Kings Hedges sounds good, what postcode are they in? And do they have an entrance fee? Sentence4: Great that was all I needed today, thank you! Sentence5: The booking was not successful. Would you like to try another day/time? Sentence6: Were you looking for a booking at Pizza Express or Pizza Express Fen Ditton? They are both in the centre of town. Sentence7: Certainly! What information specifically are you looking for? Sentence8: I was able to book that taxi for you. Be looking for a red Toyota. If you need to reach them, please contact 07360365370. Is there anything else? Sentence9: Thank you for using our service. Have a wonderful evening. Goodbye. Sentence10: I'd like to know if I can book a reservation for 7 people at 18:00 monday. Sentence11: How about 17:00? Sentence12: I need to find a swimming pool in the north. Sentence13: There are 2 swimming pools in the north, jesus green outdoor pool and kings hedges learner pool. Which one would you like more information on? Sentence14: Either one will work, I just need to book for 7 people at 18:00 on monday? Sentence15: I've got you booked at 17:00 for 7 at Pizza Express. Sentence16: Kings Hedges Learner Pool is in postcode cb42xh. Their entrance fee is a bit of a mystery, however, I don't have any firm numbers. Can I help with anything else? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System