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 number for old schools is 01223332320 Sentence2: Okay, when and where are you going? Sentence3: I'm looking for architecture in the centre of town. Can you help me with this? Sentence4: Could I also get the phone number for the school? Sentence5: I will also need a taxi. Sentence6: What is the entrance fee for the school? Sentence7: There are 15 Italian restaurants in the city, could you give me a preferred location, so I can narrow the options down? Sentence8: 6 on Thursday at 16:45 please Sentence9: Old schools to the restaurant. Sentence10: You are welcome enjoy Sentence11: Hmmm how about Italian then Sentence12: Can i get the post code too please? Sentence13: We do not have any Caribbean options here, can I lookup another cuisine type or narrow it down by anything else? Sentence14: Yes the postal code is cb21tt. Sentence15: Ok, I'm also looking for a cheap place to grab some food. Maybe carribean? Sentence16: Certainly. There are four churches and a school you could visit. Sentence17: You are booked and your booking reference number is I3JNKDOD . Sentence18: Thank you for your help today, I do not need anything else. Sentence19: For the school it is free. Sentence20: Your all set, a yellow lexus will be picking you up in time for your reservation the contact number is 07323746090, is there anything else? Sentence21: I recommend dining at ask. How many people for your reservation, and what day and time? Sentence22: I would like to make sure the taxi arrives at the restaurant by my 16:45 reservation. Sentence23: I just want a cheap italian place. Choose one you recommend for me. Then I need help reserving it. Sentence24: What time would you like the taxi? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User