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: Yes I can. When will you be traveling? Sentence2: I am trying to book a train to broxbourne. Can you help me? Sentence3: Three people are booked. The reference number is 9W4723ZW . The total fee is 53.7 GBP payable at the station. Do you need anything else? Sentence4: Yes I am looking for a place to stay in the east that has a cheap price range. Sentence5: Ok, if you need any further assistance, feel free to contact us again at any time. Have a wonderful day. Sentence6: TR8300 Departs at 05:01, would that work for you? Sentence7: No, that will be all. Thank you. Sentence8: Are you sure I can't help you with a booking or more information about one of the hotels? Sentence9: I need to arrive by 15:00 on wednesday and depart from cambridge please. Sentence10: The address is 710 newmarket road and the postal code is cb58rs. May I help you with anything else? Sentence11: Yes - could you make a reservation for 3 people and provide me the reference number? Sentence12: We have 3 for you. All are guesthouses and located in the east. Allenbell, autumn house and leverton house. All have 4 stars and offer free wifi & parking. Sentence13: Excellent. That's all I need thanks. Sentence14: Actually, yes. Can you give me the address and postcode for Autumn House? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User