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: Oh, gosh. My daughter doesn't like the sound of that. She wants to explore the city. Can you help me find a train? Sentence2: I can certainly help with that. Sentence3: Great, thanks for that. I'm also looking for a place to stay. It should be a 4 star hotel but cheap. Sentence4: Can you give me the address and postcode of one? Sentence5: Looking for a museum with free entrance fees. Sentence6: I'll be traveling from Leicester to Cambridge on Tuesday. Sentence7: Ok great. Have a wonderful day. Sentence8: nope that's it thanks Sentence9: 56 saint barnabas road postcode ce12de alexander bed and breakfast Sentence10: There are 19 trains that day, do you have a time you'd like to travel? Sentence11: Thank you for all your information. Sentence12: I have a few 4 star hotels in the city that are cheap. Do you have a preference for the area? Sentence13: Is there anything else I can assist you with today? Sentence14: The trip takes 105 minutes. I have one arriving at 09:54. Sentence15: I'd like to arrive by 10:00. How long will the trip be? Sentence16: Yes, when were you planing on visiting and from where? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System