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 Input:
customer: Hi. I am Daniel Moore. 
 agent: Hello, how can I help you? 
 customer: I want to attend a political meeting at Charlotte. Can you help me in my reservation? 
 agent: Sure, I will help you. 
 customer: Thank you. 
 agent: Please provide me your travelling dates? 
 customer: I Will start my journey on 06/14. I will return back on 06/16. 
 agent: Kindly mention me your airport codes? 
 customer: My source airport code is New York, NY - JFK. My destination airport code is Charlotte, NC - CLT. 
 agent: Do you have any specifications? 
 customer: I need a layover in my journey. I can pay up to 1000. 
 agent: Please wait a minute. 
 customer: Sure. 
 agent: Thanks for waiting, sorry to inform you that there are no flights with your specifications. 
 customer: Not an issue. Thank you for your kind information. 
 agent: Thank you for reaching us.

Ex Output:
no_flight


Ex Input:
customer: Hello. 
 agent: Hello. How can I assist you? 
 customer: I want to travel from HOU to AUS. Can you please help me for booking? 
 agent: Sure, I will help you. Your good name please? 
 customer: Sure, my name is James Carter. 
 agent: Could you please share your planned journey dates? 
 customer: My planned journey dates are 10 and 12 on the month of March. 
 agent: Let me know your connection limit. 
 customer: I need a connected flight. 
 agent: Which class would you prefer for your journey? 
 customer: I am fine with any class. 
 agent: Do you have any other preferences? 
 customer: My depart time is evening. 
 agent: Give me a minute, I will let you know the flight availability. 
 customer: Sure. 
 agent: Thank you for your time, there were no flights available that matches your requirements. 
 customer: Ok, thanks for your assistance. 
 agent: Thank you for approaching us.

Ex Output:
no_flight


Ex Input:
customer: Hello. 
 agent: Hello. 
 customer: I am Janet Perez. 
 agent: How best can I guide you from my end? 
 customer: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that? 
 agent: Please hold a moment. 
 customer: Sure. 
 agent: Thank you for waiting, there are no reservation found on the given name. 
 customer: Ok, no issues. Thanks for the information. 
 agent: Thank you.

Ex Output:
no_reservation