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 am looking a restaurant in the Centre Cambridge area that serve gastropub food. Sentence2: I have one result for you. It is cityroomz, a 0 star hotel. Do you want to book this? Sentence3: Can you book for 2 nights> Sentence4: I am unable to make a booking for that right now. Is there anything else I can do for you? Sentence5: Moderate price range. Sentence6: I have booked you a car. It's a blue Skoda, and the contact number is 07324436761. Sentence7: Your room is reserved under ref# XP513560 . Is there anything else I can help you with today? Sentence8: I will also need a taxi to take me to the restaurant and hotel. Sentence9: I can find it, but please give me the reference number for the reservation. Nil is such a creative name for a restaurant! Sentence10: Thanks, that's all I needed today. Goodbye! Sentence11: I want to make sure it arrives the restaurant by the booked time. Sentence12: The Nil moderately priced restaurant is in the centre and serves gastropub food. Would you like a reservation? Sentence13: Yes, it most certainly is. The booking was successful, and they will hold your table for 15 minutes. The booking number is CXFENRLZ . Anything else I can assist you with? Sentence14: Does it have free wifi? Sentence15: I also need a place to stay, moderately price, centre area, doesn't matter whether or not it has wifi. Sentence16: Yes it does actually. Sentence17: Yes, I can make the reservation would you like their address? Sentence18: Great, I'm glad I could help! Bye! Sentence19: Oh yessiree, tuesday 6 people and 5 nights please Sentence20: When would you like to arrive by. Sentence21: I have 3 in the centre of town,what price range please? Sentence22: That would be great. Can you make if for a party of 6 on Tuesday at 15:30? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User