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: Thank you for using our system today. Sentence2: Thanks so much you have been great! Gold stars for you! Sentence3: I'd like one that leaves after 10:45 Sentence4: There are trains going to Leicester at 21 minutes past the hour, every hour, starting at 05:21. What time would you like to travel? Sentence5: I would prefer Lebanese food. Sentence6: I also need as train going to leicester. Sentence7: TR5908 leaves Cambridge at 11:21 and arrives in Leicester at 13:06. Will that work for you? Sentence8: yes for 3 people at 13:45 on wednesday and a reference number bplease Sentence9: Yes I have Asian, British, International, European and Italian to name a few. Any preferences? Sentence10: I'll be leaving on Thursday Sentence11: I'm looking for a place to dine in the moderate price range in the centre, please. Sentence12: There is Ali baba restaurant in the centre in modest price range. Would you like me to book a table for you? Sentence13: Ok, great. What day will you be traveling? Sentence14: I was able to book you for 3 people on Wednesday at 13:45. Your reference number is X1ZSIHLS . Can I help you with anything else? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User