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, I am Williams Hernandez. 
 agent: Hello,. How may I help you? 
 customer: I want to visit EWR from my hometown MSP, can you help me with single connection of flight? 
 agent: Ok. Please provide your journey dates? 
 customer: My depart is on 12/09 and return on 12/11. 
 agent: Ticket is available with flight number 1011, price is 200. Flight connections is 1 with airline Southwest. 
 customer: OK, proceed with booking. 
 agent: Ticket is booked. 
 customer: Thank you for the help. 
 agent: Thanks.
[A]: book


[Q]: customer: Hello, I am Sandra Taylor. 
 agent: Hello, how may I aid you? 
 customer: I want to change an existing reservation, can you please help me in that? 
 agent: Sure, I am here to help you. Please wait for a while. 
 customer: Sure. 
 agent: Thanks for your time, there is no active reservation found in your name. 
 customer: That's ok, not a problem. Thanks for your information. 
 agent: Thank you for choosing us.
[A]: no_reservation


[Q]: customer: Hello. I am Amanda Walker. 
 agent: Hello, What kind of help are you expecting from our side? 
 customer: Please book me a ticket from PHL to HOU to meet my old friends. 
 agent: Sure, Can you please let me know your travelling dates? 
 customer: I have planned to travel on 07/15 and 07/17. 
 agent: Ok, which type of class do you prefer for your journey? 
 customer: I am ok with any class. 
 agent: Do you need any whistle stop in between your journey? 
 customer: I need a halt. 
 agent: Ok, please wait a moment. let me search a flight for you. 
 customer: Ok, I will wait. 
 agent: We have found a connected flight with Frontier airlines, flight number 1000 and the fare of 100. Shall I proceed for booking? 
 customer: Ok, please book this ticket. 
 agent: Your ticket has been reserved. 
 customer: Thank you. 
 agent: My pleasure, I hope you will enjoy this airline.
[A]:
book