Given the task definition and input, reply with output. 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,tell me how may I help you? 
 customer: I want to travel from New York, NY- JFK from 05/26 to 05/28. 
 agent: OK,I can help you with that? 
 customer: My destination airport is New York, NY-LGA. Do you have any ticket for me? 
 agent: OK, can you please tell me  your name? 
 customer: Sure, this is Patricia Wright. 
 agent: OK,may I know your connection limit and price? 
 customer: I want my trip within the limits of 500 with connection 1. 
 agent: OK,as per your requirements there is a flight for you,may I a ticket for you? 
 customer: Sure, you can book it for me. 
 agent: OK,your ticket has been booked. Thank you. 
 customer: Thank you, for your suggestions.
book