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: The phone there is 08451962320. Can I help with anything else? Sentence2: No, that's all I need today. Thanks! Sentence3: thank you very much. Sentence4: Yes, I am looking for theatres in town. Do you have a favorite? Sentence5: Can I help you with anything else? Sentence6: Yes I'd like to book for wednesday, 2 people staying for 3 nights. Sentence7: I can help you with that. There are 2 guesthouses that meet those requirements. One is a 4 star and one is a 0 star. Sentence8: Booking was successful. Your reference number is HICMIAVH . Sentence9: It does have free WiFi. Are you ready for me to book the room? Sentence10: Well, there are several. But I like the mumford theatre. It's also in the town centre. Sentence11: Can I get their postcode and phone number please? Sentence12: i want the one with 0 stars if it has free wifi Sentence13: I am looking for a cheap place to stay in the centre of town. Sentence14: Glad I could help, enjoy the rest of your day. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System