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

Input: Consider Input: customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I am planning to visit Philadelphia, can you please book me a ticket from LAS to PHL? 
 agent: Sure, I will help you. Can you please share your travel dates? 
 customer: My preferable journey dates are from 03/17 to 03/19. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Hawaiian airlines are providing service on your route with 1 connection and fare is 100. Can I proceed? 
 customer: Please book my ticket with the name Margaret King. 
 agent: Ok. Your booking is done with flight 1012. 
 customer: Thank you for booking my ticket. 
 agent: Thank you for choosing us.

Output: book


Input: Consider Input: customer: Hello. 
 agent: Hello, how may I best help you? 
 customer: I am planning to go for a round trip to New york, LGA. 
 agent: Kindly assign your scheduled dates? 
 customer: Can you help me in booking by the name Anna Campbell? My travelling dates are from 11/11 to 11/13. 
 agent: May I know your budget for flight ticket? 
 customer: I can bare up to 1000. 
 agent: Just hold on a minute, let me check and get back to you. 
 customer: Sure. 
 agent: Thanks for being patient. 
 customer: Ok. 
 agent: There is a flight found with an airline Spirit of flight number 1005 and cost is 100. 
 customer: Ok, Proceed. 
 agent: Would you like me to proceed? 
 customer: Sure. 
 agent: Your ticket has been booked. 
 customer: Thank you. 
 agent: Thank you for choosing us.

Output: book


Input: Consider Input: customer: Hello. 
 agent: Hello. What can I do for you? 
 customer: I am planning to attend a dance competition in IAH from AUS. Can you find a ticket for me? 
 agent: Sure, I would like to know your travel dates for booking? 
 customer: Sure, I am planning to travel on 01/04 to 01/06. 
 agent: Happy to say this, I found Delta airline with 1 connection to attend dance competition. Can I proceed for booking? 
 customer: Ok, make sure that the price should be 200. 
 agent: Your ticket is confirmed with flight number 1005, with price 100. May I know your name? 
 customer: Yes, I am Betty Lewis. 
 agent: Betty Lewis, thank you for contacting us. 
 customer: Thank you for spending your valuable time. 
 agent: Have a good day.
Output: book