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'd like to commute between the two places. Sentence2: Fortunately, it is free entry. Is there anything else I can help you with? Sentence3: I'd like a room in the north please Sentence4: There are 13 different places to stay, do you have a preference on price or amenities? Sentence5: No. Is there availability for 1 night? Sentence6: The regency gallery address is 39 fitzroy street in the centre area. Sentence7: I'm happy to help. Where in the city would you like your hotel to be located? Sentence8: Great, thanks for using our service. have a great day. Sentence9: Maybe. Unless you can just tell me what the entrance fee is and then I won't need it? Sentence10: Where would you like to go? Sentence11: I would like a hotel that has open bookings for 6 people for 2 nights starting from Saturday. Sentence12: You're in luck. I've got a room available for saturday at the acorn guest house for 6 people. It's booked, your reference # is 3IX7EGRG . Sentence13: Yes, I'd like a place to stay, too, please. Sentence14: It is a museum. Would you like the phone number? Sentence15: Okay. Can you book me a taxi as well? I want to leave the hotel by 04:00. Sentence16: Ok I booked you a taxi to leave the acorn guest house at 4:00. The car will be a blue toyota and the contact number is 07424241550. Sentence17: Okay, what kind of place is it? Sentence18: Wonderful, you've been very helpful! That's all I need for today, thank you! Sentence19: I am looking for regency gallery. Can you tell me where it is located? Sentence20: Unfortunately, I can't find any openings for those nights in the north. Would you like to try a different part of town? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System