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, how may I support you? 
 customer: Assist me in booking a flight ticket from SFO to DEN. 
 agent: I can definitely do that for you. Will you please let me know your maximum connection limit? 
 customer: Single connection flight is required. 
 agent: On what dates are you planning to make your trip? 
 customer: I preferred to travel in June 23 and June 25. 
 agent: Which airline will you prefer to travel in? 
 customer: I prefer to travel in normal cost airline. 
 agent: Do you need an economy class or business class? 
 customer: Economy class suits best to me. 
 agent: Please forward your name. 
 customer: This is Samantha Lewis. 
 agent: We found a direct flight on your way. Is that fine? 
 customer: Sure, proceed to book it. 
 agent: Your booking has been done in flight 1012 of United airlines with an estimate of 200. 
 customer: Thanks for your booking. 
 agent: Thank you for reaching us.
[EX A]: book

[EX Q]: customer: Hello. 
 agent: Hello. 
 customer: I am Barbara Green. 
 agent: How can I assist you? 
 customer: I am very interested in Hiking and cycling. So, I am willing to visit Hiking and cycling at Bear Mountains. Can you please help me to reserve a flight ticket for me from PHX to LAX? 
 agent: Sure, may I know your preferred journey dates? 
 customer: Sure, I have planned my journey dates on 02/03 and I will catch the return flight on 02/05. 
 agent: Please give me a minute. 
 customer: Sure, take your own time. 
 agent: I found a flight for you in UA airlines with price 200. Shall I book the ticket for you? 
 customer: I am ok with the flight that you have provided to my journey. Continue with flight ticket booking. 
 agent: Your ticket is confirmed and the flight number is 1002. 
 customer: Thank you for your help in my flight ticket booking. 
 agent: Thank you for contacting us, have a safe journey. 
 customer: You are welcome.
[EX A]: book

[EX Q]: customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: I am Janet Robert. I want to cancel my reservation due to heavy rainfall at my source code. 
 agent: Sure, please wait a moment. There is no reservation on your name. 
 customer: Thank you for informing me. 
 agent: Thank you so much.
[EX A]:
no_reservation