Definition: 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
Input: customer: Hi. 
 agent: Hello. 
 customer: I am Raymond Parker. 
 agent: How may I help you? 
 customer: I am a doctor and there is an operation that I have to do in PHL, so I need to travel that place form my region LAS, can you book the ticket for me? 
 agent: Sure, I am here  to help you. 
 customer: Thank you for considering my request. 
 agent: Ok, can you please help me with travel dates? 
 customer: I am probably planning my dates on 11/09 and back on 11/11. 
 agent: Ok, please wait a minute. 
 customer: Sure, take your own time. 
 agent: There is a flight with connection limit 1 and the flight airlines is  Delta with price 200. Can I proceed with ticket booking? 
 customer: Yes, you can confirm my flight ticket booking. 
 agent: Ok, I have confirmed your ticket with the flight number 1020. 
 customer: I appreciate your service in my flight ticket booking. Thank you so much. 
 agent: You are welcome. Thank you for reaching us.
Output:
book