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

[EX Q]: customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: My name is Anthony Scott. Owing to an emergency, I want to cancel my reservation. 
 agent: Sure, I will help you. Please wait for a while. 
 customer: Sure. 
 agent: Thanks for waiting. There was no reservation found on your name. 
 customer: No problem, thank you for your help. 
 agent: Thank you for choosing us.
[EX A]: no_reservation

[EX Q]: customer: Hi,. 
 agent: Hello,. 
 customer: Myself Angela Hill. 
 agent: How may I abet you? 
 customer: I just want to cancel my recent reservation because my husband is suffering from Diabetics and his Blood Pressure was totally high. So, to take care of him I want to cancel it. Can you help me with this? 
 agent: Sure, I am here to help you. 
 customer: Thank you. 
 agent: Please wait a while, I will check the reservation list and get back to you with the status. 
 customer: Sure, I will wait for your response. 
 agent: Thank you for being so patience. 
 customer: My pleasure. 
 agent: I have checked in the reservation list to cancel your ticket, but couldn't find any reservation in your name in the data list. 
 customer: That's fine, not an issue. 
 agent: Thanks for your approach. Hope to serve you again. 
 customer: Thanks for your prompt response. 
 agent: Have a nice day.
[EX A]: no_reservation

[EX Q]: customer: Hi. 
 agent: Hello, how can I help you? 
 customer: Please book a ticket from Charlotte, NC-CLT to Houston, TX-HOU. 
 agent: Sure, Kindly mention your travelling dates. 
 customer: My travelling dates are from 08/02 to 08/04. 
 agent: Ok, how much do you want to spend on your ticket? 
 customer: Price limit 1000. 
 agent: Ok, May I know your name? 
 customer: My name is Dennis Walker. 
 agent: Thank you for providing details, we found a connecting flight in 1000 AA airline with a fare of 100. Can I proceed for booking? 
 customer: Please book a flight. 
 agent: Sure, your ticket has been booked. 
 customer: Thanks. 
 agent: Thank you for reaching us.
[EX A]:
book