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: Thanks. The train and attraction are all I need today. I appreciate your help. Goodbye. Sentence2: I am going to Cambridge and I want to travel home by train. Sentence3: I am also interested in places to go in town. I would like to find an entertainment attraction in the east of town. Do you have any suggestions? Sentence4: I would like to leave on Wednesday after 16:00 and go to Norwich. Sentence5: Yes please. Thank you so much! Sentence6: The first train leaving after 16:00 is TR6838. It leaves at 16:36 and will arrive at 17:55. Will that fit your needs? Sentence7: Okay your booking was successful and your reservation number is SAAOOKI0 . Sentence8: That sounds perfect, can you let me know the price per ticket on that? Sentence9: Can I get the postcode for the funky fun house? Sentence10: What day would you like to travel? Sentence11: I've got two for you. The Cherry Hinton Hall and Grounds or the Funky Fun House. Would you like more information on one or both? Sentence12: You're welcome! Have a great day! Sentence13: the postcode is cb58hy. anything else? Sentence14: It is 17.60 pounds. Would you like me to book it for you? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User