In this task, you are given a conversation between a flight agent and the customer. You are given 4 options and you need to select the goal of the conversation. It is provided as part of customer's context, which has to be one of the following: `book`: Make a new reservation, `cancel`: Cancel an existing reservation, `no_flight`: No flight found for the customer's preference, `no_reservation`: No reservation / No change / No cancellation was made in the conversation, mostly enquiring details
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Question: customer: Hi. 
 agent: Hello. 
 customer: I am Matthew Green. 
 agent: How can I help you now? 
 customer: Please search flights on these routes LAX to JFK? 
 agent: Sure, can you please mention the travelling dates of your journey? 
 customer: I am going to start my journey on 05/01 and I would like to return on 05/03. 
 agent: Ok, please wait for a while. 
 customer: OK. 
 agent: Thank you for waiting, there is a flight 1001 in Delta airline has the price 100 with 1 connection. Can I proceed with this booking? 
 customer: Ok proceed to booking. 
 agent: Your booking is done, have a safe journey. 
 customer: Thank you for booking. 
 agent: Thank you for approaching us, have a nice day.

Answer: book


Question: customer: Hello. 
 agent: Hello, how can I assist you today? 
 customer: I am Brian Hernandez, want to change my existing reservation, because my interview got postponed to other dates. Can you help me in this? 
 agent: Sure. Please wait for a while. 
 customer: Sure. 
 agent: Thanks for waiting, there is no reservation found on your name. 
 customer: Ok. Thanks for your quick response. 
 agent: Thank you for availing us.

Answer: no_reservation


Question: customer: Hi. I am Paul Collins. 
 agent: Hello, How exactly I can serve you the best today? 
 customer: I want to book a flight ticket from Austin to San Francisco, so can you please book me a direct flight? 
 agent: Sure, we are rapturous to help you. 
 customer: Thank you. 
 agent: Could you please help me with providing your corresponding airport codes? 
 customer: Yes, my airport codes are TX-AUS and CA-SFO. 
 agent: On which dates would you like me to book a flight ticket for you? 
 customer: I want to book a flight ticket on dates 12/18 and 12/20. 
 agent: Ok, please wait a moment, let me search a flight for you. 
 customer: Ok. 
 agent: Sorry, there were no flights with your information due to having some bad weather conditions. 
 customer: That's ok. Thank you for the response. 
 agent: Thank you for choosing us, hope to serve you better next time.

Answer:
no_flight