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

Ex Input:
customer: Hi, I am Kimberly Nelson. 
 agent: Hello, How can I help you today? 
 customer: I am one of the best hacker in my company, unfortunately my Las Vegas, NV - LAS branch websites was hacked by some one so they called me to solve that problem. Can you help me to book a connecting flight? 
 agent: Sure, can you please share me your travel dates? 
 customer: I want to fly on 01/10 and recur on 01/12. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: Can you please share me your airport code? 
 customer: I want to board from Washington DC - DCA. 
 agent: Ok, please wait  a moment. 
 customer: Sure. 
 agent: Sorry to say, no flights found with your requirement. 
 customer: Ok, thank you. 
 agent: Thanks for reaching us.

Ex Output:
no_flight


Ex Input:
customer: Hi. 
 agent: Hello, how may I render you? 
 customer: I want to book a ticket from BOS to JFK, can you help me? 
 agent: Sure, may I know your journey dates? 
 customer: My travel dates are 05/07 and 05/09. 
 agent: Do you have any specification? 
 customer: I need a flight with connection 1. 
 agent: May I know your good name for further process? 
 customer: Myself Lisa Edwards. 
 agent: Thank you for sharing your journey details, please hold on. You have a flight with airline Hawaiian and flight number is 1014 with 1 connection and price is 200. 
 customer: Sure. You can book it. 
 agent: Your reservation is done. 
 customer: Thank you for booking. 
 agent: Thank you for choosing us, have a nice day.

Ex Output:
book


Ex Input:
customer: Hello. 
 agent: Hello, how may I help you? 
 customer: Can you please reserve me a flight ticket from IAD to DTW? 
 agent: Are you fine with connecting flight? 
 customer: Yes, I am ok with connecting flight. 
 agent: Sure, can you please specify me your dates of travel? 
 customer: Sure, my travel dates are from May 16 to May 18. 
 agent: May I know your specifications? 
 customer: No more specifications. 
 agent: Let me know your name? 
 customer: Myself Ruth Nelson. 
 agent: Sorry to say, no flight is available for you. 
 customer: That's ok, no problem. Thank you for the information. 
 agent: Thank you for reaching us.

Ex Output:
no_flight