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: Hi. 
 agent: Hello, how may I aid you? 
 customer: I need to travel from BOS to MCO, can you help me with that? 
 agent: Sure, we are here to help you. Can you share me your trip dates? 
 customer: My trip dates are 03/27 and 03/29. 
 agent: Do you need any way station in your journey? 
 customer: Yes, I need a single stop. 
 agent: Is there any class preference for you? 
 customer: I need economy class. 
 agent: Do you have any other requirements? 
 customer: Nothing more. 
 agent: May I know your name please? 
 customer: I am Alexander Lopez. 
 agent: There is a connecting flight with fare of 100 and 1008 flight number. Shall I proceed? 
 customer: Yes, proceed. 
 agent: Your seat has been reserved with Hawaiian Airlines in economy class. 
 customer: Thank you for that. 
 agent: Thank you for choosing us.
book