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. 
 agent: Hello, how may I aid you today? 
 customer: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that? 
 agent: Sure, may I know your good name? 
 customer: I am Kevin Clark. 
 agent: Ok, please wait for a minute. 
 customer: Sure. 
 agent: I have checked in reservation list to change your ticket, but could not find any reservation with your name. 
 customer: Ok, no issues. Thanks for the information. 
 agent: Thank you for reaching us.
[A]: no_reservation


[Q]: customer: Hello, I am James Phillips. 
 agent: Hello, how may I serve you today? 
 customer: I have a meeting with my office heads at Benaroya hall on  which is at Seattle. Please help me in booking from IAH to SEA? 
 agent: Sure, can you please share your budget for ticket? 
 customer: I can bare only 200. 
 agent: Do you need any layby in between journey? 
 customer: I need a direct flight. 
 agent: Please specify your assign dates of travelling? 
 customer: My journey dates are 10/17 to 10/19. 
 agent: Ok, please wait a moment. 
 customer: Ok. 
 agent: Thank you for your time, sorry, no flights available on that day. 
 customer: Ok, no issues. Thank you for your help. 
 agent: Thank you for reaching us.
[A]: no_flight


[Q]: customer: Hello, I am Sharon Brown. 
 agent: Hello Sharon. How can I assist you? 
 customer: Last week, I made my booking with wrong flight.So, I want to change my reservation. Will you please help me? 
 agent: Let me check, please wait for a while. 
 customer: Sure. 
 agent: Sorry, no reservation found by your name. 
 customer: It's ok, no problem. 
 agent: Thank you for reaching us. 
 customer: You are welcome.
[A]:
no_reservation