Teacher: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
Teacher: Now, understand the problem? Solve this instance: customer: Hi, I am Sharon Edwards. 
 agent: Hello, how may I aid you today? 
 customer: I need to book a flight ticket to Washington to enjoy religious festivals with family. Can you make a reservation from LGA? 
 agent: Sure, may I know your destination airport code? 
 customer: Sure, my landing point is IAD. 
 agent: May I know your journey dates? 
 customer: Sure, I need to fly on 03/02 and 03/04. 
 agent: Please wait for a minute. 
 customer: Sure. 
 agent: Southwest airline with flight number 1009 is available. And ticket fare 100 with a single connection is available. 
 customer: Please proceed to book. 
 agent: Your booking has been confirmed. 
 customer: Thank you for your kind service. 
 agent: Thank you for connecting with us.
Student:
book