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 may I help you? 
 customer: I want to book a ticket from TX-IAH to CA-OAK.Can you help me out? 
 agent: Sure, may I know your travelling dates? 
 customer: I want to travel from 03/06 to 03/08. 
 agent: Sure, may I know your name? 
 customer: I am Mary Thompson. 
 agent: Yes, I found a flight-1001 with spirit airlines, can I proceed? 
 customer: May I know the price limite? 
 agent: Yes, the price is 200. 
 customer: Ok, you can proceed. 
 agent: Yes, your ticket has been confirmed. 
 customer: Thank you for your help. 
 agent: Thank you for contacting us.
Solution:
book