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. 
 customer: Donald Scott here,. 
 agent: How may I help you? 
 customer: I want to cancel my ticket due to snow storm in my place. 
 agent: Donald Scott, I am willing to help you for this. Let me check your reservation status in our database. 
 customer: Ok. 
 agent: Donald Scott sorry to intimate, I found a reservation and cancelled sucessfully with your criteria. 
 customer: Thank you. 
 agent: You are most welcome, thank you very much for utilizing our agency.
[EX A]: cancel

[EX Q]: customer: Hi. I am Edward Walker. 
 agent: Hello, Please inform me, How may I assist you the day? 
 customer: Prepone plan came into a picture owing to announcement of birth of baby boy.So I need to cancel my recent reservation. Can you please help me in cancellation? 
 agent: Sure, I can help you in that cancellation. 
 customer: Thank you. 
 agent: Please allow me a moment to check for the previous reservation in our data base. 
 customer: Sure. 
 agent: We are sorry to inform that, there is no active reservation found on your name. 
 customer: Ok, no issues. Thank you. 
 agent: Thanks for choosing us. wish you a nice day.
[EX A]: no_reservation

[EX Q]: customer: Hello. 
 agent: Hello. How may I guide you today? 
 customer: Jack King here. 
 agent: Welcome to flight booking agency King. 
 customer: I want to travel from DFW to DEN for attending a seminar. Can you please help me for booking the ticket? 
 agent: Sure, I will help you. 
 customer: Ok. 
 agent: Can you please help me with your preferable dates of travelling? 
 customer: My departure date is 09/02 and return date is 09/04. 
 agent: Sure, take your time. Please wait a moment to check the flights availability. 
 customer: Ok, take your time. 
 agent: Sorry to inform you that, there are no flights available with your requested dates of travelling. 
 customer: Thank you for the information. 
 agent: Thank you for reaching us, have a great day.
[EX A]:
no_flight