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: Hi. I am Samuel Baker. 
 agent: Hello, how may I assist you today? 
 customer: I want to change my reservation owing an emergency. 
 agent: Sure, we are glad to serve you. Please wait for a while, let me check your reservation with us. 
 customer: Ok. 
 agent: Thanks for your time, unfortunately no reservation found with your name. 
 customer: Ok, thank you for your service. 
 agent: Thank you for availing us, have a great day ahead.
[A]: no_reservation


[Q]: customer: Hi, I am Pamela Miller. 
 agent: Hello, how can I assist you today? 
 customer: I want to travel from New York, EWR to attend for my sister's marriage anniversary. Will you please aid me in booking a ticket under the price range of 500? 
 agent: Sure, I will help you. May I know your destination airport code? 
 customer: My destination point is Orlando, MCO. 
 agent: Can I have your trip dates? 
 customer: My journey dates are from 06/02 to 06/04. 
 agent: Please wait for a while. 
 customer: Sure, take your time. 
 agent: Thanks for waiting. Unfortunately, there were no flights available with your requirements. 
 customer: That's ok, I will check for another option. Thank you for the response. 
 agent: Thank you for contacting us.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello. How can I assist you at this moment? 
 customer: I am Pamela Walker here. I am planning to visit a Houston city to meet my grandfather in IAH from LAS. Can you find a flight ticket for me? 
 agent: Sure Pamela Walker, I will help you with that. Can I have your travel dates please? 
 customer: Ok, my preferable dates are on 12/19 and back on 12/21. 
 agent: Ok Pamela Walker, please wait a moment to check flight availability. 
 customer: Sure. 
 agent: AA airlines running a flight in your route with connection 1 and the fare of the ticket is 200. Shall I proceed with booking? 
 customer: Yes, you can reserve the ticket. 
 agent: Ok Pamela Walker, your ticket booking has done and the flight number is 1021. 
 customer: Thank you for spending your time. 
 agent: Thank you for choosing us, have a great journey.
[A]:
book