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. 
 agent: Hello. How can I assist you? 
 customer: Due to some issues, I am willing to change my existing reservation. Can you please help me for this? 
 agent: Sure, can I know your name please? 
 customer: I am Rebecca Lee. 
 agent: Ok, wait a moment please. 
 customer: Sure. 
 agent: Sorry, there is no reservation found on your name. 
 customer: Oh! It may not be booked properly due to some technical issues while booking. Thank you for checking. 
 agent: Thank you for approaching us.

Ex Output:
no_reservation


Ex Input:
customer: Hello. 
 agent: Hello, how can I help you today? 
 customer: I am planning to for a heritage tour in PHX. Can you book me a ticket from AUS? 
 agent: Sure, can you share me your travelling dates? 
 customer: I will be leaving on Oct 25 and will come back on Oct 27. 
 agent: Do you have any connection limit? 
 customer: I need 1 stop over within my route. 
 agent: Is there any other specifications? 
 customer: No. 
 agent: May I know name please. 
 customer: I am Kevin Phillips. 
 agent: I found a flight with the price of 100 having one connection and economy class. Can I proceed to booking? 
 customer: Fine, please proceed. 
 agent: Your ticket is booked with the flight- 1008. 
 customer: Thanks for your support. 
 agent: Thank you for reaching us.

Ex Output:
book


Ex Input:
customer: Hello. 
 agent: Hello. How can I assist you today? 
 customer: I want to travel from MSP to ORD. Can you help me to book a flight ticket? 
 agent: Please can I know your dates of journey to book? 
 customer: I want to fly in the flight on Nov 03 and Nov 05. 
 agent: Ok, please let me know your specifications. 
 customer: I prefer to travel in economy class. 
 agent: There is a flight ticket available for a connecting flight for the airfare 200. Can I book a flight 1023? 
 customer: Proceed to booking. 
 agent: Ok, please let me know your name to proceed. 
 customer: I am Jason Wright. 
 agent: The flight ticket is been confirmed and the airlines s Hawaiian. Thank you for choosing our agency. 
 customer: Thank you for your help.

Ex Output:
book