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: Hello. 
 agent: Hello. How may I assist you? 
 customer: Please reserve me a flight ticket from LGA to DEN. 
 agent: Sure, may I know your connection limit? 
 customer: My connection limit is 1. 
 agent: May I know your trip dates? 
 customer: My travel dates are May 21 and May 23. 
 agent: Do you prefer any specifications? 
 customer: No. 
 agent: Please share your name? 
 customer: My name is Brandon Parker. 
 agent: Sorry, no flights found on your route. 
 customer: No problem, thank you for the information. 
 agent: Thank you.

Ex Output:
no_flight


Ex Input:
customer: Hi. I am Raymond Miller. 
 agent: Hello, how can I provide assistance to you? 
 customer: Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out? 
 agent: Sure, we are glad to help you. 
 customer: Thank you. 
 agent: Please wait a minute, I will check and let you know the status of your existing reservation. 
 customer: Sure, take your time. 
 agent: Thank you for waiting, sorry to notify you that there is no reservation matches with the given name. 
 customer: Ok, not an issue. Thank you for your kind information. 
 agent: Thank you for opting us.

Ex Output:
no_reservation


Ex Input:
customer: Hi. I am Jack Robinson. 
 agent: Hello, How can I aid you? 
 customer: I want to book a flight ticket from MA-BOS to CO-DEN. Can you help me with this booking? 
 agent: Sure, I am here to help you. May I know your travelling dates? 
 customer: 04/12 and 04/14 are my travelling dates. 
 agent: Do you have any connection limit? 
 customer: I need a stop over. 
 agent: Thanks for your details,Please hold on. 
 customer: Ok. 
 agent: Thanks for waiting. There are no flights found on your data. 
 customer: No issue. Thank you. 
 agent: Thank you.

Ex Output:
no_flight