You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Let me give you an example: 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
The answer to this example can be: Answer: (A) User
Here is why: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

OK. solve this:
Sentence1: You are very welcome. Enjoy your stay. Sentence2: The train should go to stevenage and should leave on friday. The train should depart from cambridge and should leave after 21:00 Sentence3: How about one that is in the type of Cinema Sentence4: Could I book a train ticket, please? Sentence5: How about multiple sports in the south part of time? Sentence6: It seems there are 2 trains that fit your request. The TR8420 and the TR8575. Sentence7: Sure thing! Your reference number for this booking is 9KVSMF6P . Can I help you with anything else today? Sentence8: Cineworld Cinema is in the south part of town. Sentence9: Thank you. You as well. Sentence10: Where specifically? Can you give me the postcode? Sentence11: The entrance fee is unknown as it depends on each movie. Sentence12: Thanks. I need to know about some places to go in town, too. Sentence13: There are no multiple sports locations in the south part of town. Sentence14: Have a nice day. Sentence15: Okay that is all I need today, thank you. Sentence16: Sure, I can help you with that. I will need to know what day and time and also where you will be traveling to by train. Sentence17: Great, I'll take the first one and please book it for 4 people please. Sentence18: I would be happy to help with your request. What type of attraction are you looking for? There are theatres, cinemas, swimming pools, and nightclubs just to name a few. Sentence19: The address for Cineworld Cinema is Cambridge Leisure Park, Clifton Way. It also has the postcode of cb17dy. Is there anything else I can help you with today? Sentence20: I would like to go see a movie, but want to compare prices. how much is the Cineworld entrance fee? Question: Who has spoken the sentence 18? (A) User (B) System
Answer:
Answer: (A) User