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: Hello. 
 agent: Hello, how can I help you? 
 customer: My holiday vacation has been postponed.Can you please help me for changing the existing reservation? 
 agent: Sure, I will help you. 
 customer: Thank you. 
 agent: May I know your good name please? 
 customer: Sure, my name is Matthew Nelson. 
 agent: Sorry, there is no reservation found on your name in our database to change. 
 customer: Ok, no problem. 
 agent: Thank you for approaching us. 
 customer: Thank you for your help. 
 agent: Have a great day.
[A]: no_reservation


[Q]: customer: Hello. 
 agent: Hello, how can I assist you? 
 customer: I would like to change my reservation due bad weather condition at my destination location, can you please help me out with that? 
 agent: Sure, may I know your name? 
 customer: Myself Larry Lewis. 
 agent: Please give me a moment to check your ticket status. 
 customer: Sure, I will wait for your response. 
 agent: I found your reservation, could you provide your itinerary dates? 
 customer: Sure, my travel dates are from July 19 to July 21. 
 agent: May I know your genesis and terminus airport codes? 
 customer: My airport codes are PHL and PHX. 
 agent: Do you have any specifications? 
 customer: I would prefer connecting flight for my trip. 
 agent: Let me know if you have any preferences. 
 customer: I don't have any other specifications. 
 agent: Spirit airlines with flight 1027 is providing a connecting flight and ticket costs you 100 in economy class. 
 customer: Ok, please confirm my ticket. 
 agent: Your ticket is confirmed Larry Lewis. Flight departs at 14:00 hours and arrives at 23:00 hours. 
 customer: Thank you for booking. 
 agent: Thank you for choosing us.
[A]: book


[Q]: customer: Hello. I am Michael Baker. 
 agent: Hello, how may I assist you? 
 customer: Owing to an emergency, I want to cancel my recent reservation. Can you help me out? 
 agent: Sure, I will help you with the change of flight reservation. Thanks for waiting. But I am sorry to say that there is no reservation on your name to change it. 
 customer: That's ok. Anyways, thank you for your help. 
 agent: Thank you.
[A]:
no_reservation