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
Q: customer: Hello, I am Angela Campbell. 
 agent: Hello, how may I serve you today? 
 customer: I want to book a flight ticket from IAD to DTW to attend my family function, can you please make a reservation with fare 1000? 
 agent: Sure, can you please provide your journey dates? 
 customer: My journey dates are from 09/10 to 09/12. 
 agent: Do you need any halt in between journey? 
 customer: Yes, I need a stopover in between my journey. 
 agent: Ok, please hold a moment. 
 customer: Ok. 
 agent: Thanks for your time, we have found a Hawaiian airline, flight number-1026 connections-1 and ticket fare is 100. 
 customer: Ok, book the ticket. 
 agent: Sure, your ticket has been booked. 
 customer: Thanks for your service. 
 agent: Thank you for availing us.
A:
book