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: What day of the week are you looking to travel? Sentence2: Great! Have a good day. Sentence3: I need a train to go from Cambridge to Norwich. Sentence4: I would like to book that train for 4 people please. Sentence5: Thanks you too Goodbye Sentence6: yeah, I'm also looking for a place to stay. I don't like hotels, so a guesthouse would be better. Moderate in price. Sentence7: can I have the star rating and idf they have wi fi ? Sentence8: a and b guest house is a guesthouse in the east and it is moderate. Shall I book it ? Sentence9: What time would you like to leave or arrive by? Sentence10: OK, that's all I need for now. Thanks. Sentence11: The star rating is 4 and they do have free wifi. Sentence12: I would like to arrive by 13:45. Sentence13: I have the TR7438 that will arrive at 12:55. Would you like a booking made today? Sentence14: Yes, the hotel should be in the east and doesn't need to have free parking. Sentence15: I am traveling on Sunday Sentence16: There are several moderate priced guesthouses do you have a preferred area that you want to stay in? Sentence17: Great. I hope you have an excellent day. Sentence18: 7G6OJ8G2 is your confirmation code. May I help you further? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User