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: Ok great, can you please confirm your departure location? Sentence2: Your reference number is 2AIO16E6, is there anything else you need? Sentence3: No thanks. That won't be necessary. Have a great day. Thanks. Bye. Sentence4: I'd like to leave on Friday and get there by 15:30 Sentence5: The first one sounds nice. I'd like to make a reservation for 2 people at 13:30 on Thursday. Sentence6: I am looking for a moderately priced restaurant in the centre. Sentence7: I am also looking for a train that goes to Stevenage. Sentence8: Great. I'll make the reservation for you at the hotel du vin and bistro. Is there anything else I can do for you? Sentence9: Could I have the reference number please? Sentence10: Your train trip would cost you 12.80 pounds. Would you like me to book it? Sentence11: You're welcome. You have a great day as well. Bye! Sentence12: There are 5 trains leaving Cambridge with that arrival time. What time would you like to leave? Sentence13: What other information can you give me about this train ride? Sentence14: The latest departure time would work best. thank you. Sentence15: There are 21 options for moderately priced food in the centre. What type of food are you looking for? Sentence16: I'm hoping to have some european food. Sentence17: There are 4 restaurants that meet your specifications: Hotel Du Vin and Bistro, Galleria, De Luca Cucina and Bar, and Riverside Brasserie. Do any of these meet your liking? Sentence18: I'll be departing from Cambridge. What will the ticket cost me? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User