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. 
 agent: Hello. How can I assist you? 
 customer: My name is Kimberly Wright. I am planning to book a plane ticket from PHL to IAH. 
 agent: Sure, I can do that for you. Can you please provide me your trip dates? 
 customer: Sure, my trip dates are from 08/22 to 08/24. 
 agent: Ok, please wait for a moment. 
 customer: Ok, take your time. 
 agent: There is a fight available in Southwest airlines and the ticket costs you 100 only. Shall I book the ticket? 
 customer: Ok, please proceed and confirm my reservation. 
 agent: Wright, your ticket is booked successfully with the flight-1017. 
 customer: Thank you. 
 agent: Your are most welcome and thank you for choosing us.
Solution:
book