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

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.
book

customer: Hello. 
 agent: Hello. How may I help you? 
 customer: Could you please help me in flight ticket booking process from ORD to MSP? 
 agent: Sure, can you please tell me your trip dates? 
 customer: Thank you for your response, I want to take off on Nov 11 and book my return ticket also on Nov 13. 
 agent: Do you have any other requirements? 
 customer: I will prefer 1 break in between my journey. 
 agent: Ok, please wait a minute. Thank you for waiting and we have found a flight in economy class with 1 connection in Frontier airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight? 
 customer: Please confirm this flight ticket on my name Kathleen Thomas. 
 agent: Your ticket is booked in 1001 flight. 
 customer: Thank you. 
 agent: Most welcome.
book

customer: Hi. 
 agent: Hello. How can I assist you? 
 customer: Kenneth Jackson here, I would like to change my existing reservation, because while booking I gave wrong airport codes in my previous reservation so can you help me for this? 
 agent: I can help you with that Jackson. 
 customer: Thank you. 
 agent: Sorry, there is no reservation found on your name in our database. 
 customer: Oh! it's ok, no problem. Thank you for your quick response. 
 agent: Thank you for choosing us.
no_reservation