Detailed Instructions: 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
Problem:customer: Hello. I am Carol Adams. 
 agent: Hello, how can I help you today? 
 customer: I would like to meet my grand parents who are staying in LGA. Can you please help me to book a flight from EWR? 
 agent: Please share me your planned travel dates. 
 customer: Sure, I want to travel on Sept 29 and need to return on Oct 1. 
 agent: Do you have any connection limit? 
 customer: Yes, I need a flight with single connection. 
 agent: Is there any class preference for you? 
 customer: No, I am comfortable with any class. 
 agent: Do you have any other specifications? 
 customer: Yes, my depart time will be on afternoon. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: We found an airline: Frontier, flight number: 1001 and price is 100 with one connection. 
 customer: Ok, please proceed with the booking. 
 agent: Your flight ticket has been reserved in economy class. Your departure time is 14:00PM. 
 customer: Thank you. 
 agent: Thank you for reaching us.
Solution:
book