Detailed Instructions: 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
See one example below:
Problem: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
Solution: no_reservation
Explanation: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation

Problem: customer: Hello. 
 agent: Hello, how may I help you today? 
 customer: I am Jacob Carter. 
 agent: Ok. 
 customer: I would like to book a ticket from PHX to SEA, can you please help me out? 
 agent: Sure, I would be happy to help you. Let me know your connection limit. 
 customer: I need a connection limit 1. 
 agent:  In which class would you like me to book your flight ticket? 
 customer: I don't have any class preferences. 
 agent: On which dates would you like me to book a flight ticket for you? 
 customer: Ok, you can proceed. I will mention the dates. 
 agent: Ok. 
 customer: I am travelling on these dates Jan 6th and 8th. 
 agent: Do you have any other requirements? 
 customer: I prefer departure in the afternoon. 
 agent: Ok, please wait a moment, let me search a flight for you. 
 customer: Sure. 
 agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: Ok no problem,  thank you for your services. 
 agent: Thank you for choosing us.
Solution:
no_flight