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 help you today? 
 customer: I want to cancel my recent reservation owing to an emergency. 
 agent: Sure, may I know your good name? 
 customer: My name is Richard Campbell. 
 agent: I have checked in reservation list to cancel your ticket, but could not find any reservation with your name. 
 customer: Thank you. 
 agent: Thank you for opting us.
[A]: no_reservation


[Q]: customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I want to cancel my recent reservation. Can you help me out? 
 agent: Sure, can you help me with your name? 
 customer: Deborah Lee. 
 agent: Sorry, there is no reservation found under your name. 
 customer: That's ok. Anyways, thank you. 
 agent: Thank you for reaching us.
[A]: no_reservation


[Q]: customer: Hello,. I am Cynthia Roberts. 
 agent: Hello, how can I help you now? 
 customer: I made a earlier reservation to go for a trip with my friends, due to some financial problems, it got postponed. Can you please change my existing reservation? 
 agent: Sure, I will help you with that. 
 customer: Thank you. 
 agent: Please wait for a moment, while I check for the reservation. 
 customer: Sure. 
 agent: Thank you for waiting, sorry there is no reservation found on your name in our system data. 
 customer: Ok, no issue. Thank you for your information. 
 agent: Thank you for reaching us, we hope see you again.
[A]:
no_reservation