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

Input: Consider Input: customer: Hello. 
 agent: Hello. How can I aid you? 
 customer: I am Jonathan Williams. Can you please cancel my reservation as meeting with my client got postponed? 
 agent:  Ok, please wait I will revert you. 
 customer: Sure. 
 agent:  We found reservation on your name and it is cancelled. 
 customer: Ok. Thank you. 
 agent:  Thank you for availing us.

Output: cancel


Input: Consider Input: customer: Hi. 
 agent: Hello. How can I assist you? 
 customer: I am Emma Young. I am planning to book a ticket from CLT to DFW. Can you please help me out? 
 agent: Ok, may I know your travelling dates? 
 customer: I would like to travel on Mar 10 and return back on Mar 12. 
 agent: Here is a connecting flight with flight number 1029 and fare is 100, providing ticket in economy class. Shall I proceed with booking? 
 customer: That's fine, please proceed the booking. 
 agent: Your booking is done in Spirit airlines. 
 customer: Thank you for your service. 
 agent: Thank you for choosing us.

Output: book


Input: Consider Input: customer: Hello. 
 agent: Hello, how can I aid you? 
 customer: Please help me to book a flight ticket from MSP to OAk. 
 agent: Please provide your journey dates. 
 customer: My travel dates are 06 to 08 of July. 
 agent: Do you need any connection limit? 
 customer: I need a connecting flight. 
 agent: Do you need any other specifications? 
 customer: I prefer to return in the morning. 
 agent: May I know your name? 
 customer: I am Emily Smith. 
 agent: There are no flights available on your routes. 
 customer: It's ok, not a problem, thank you. 
 agent: Thank you for choosing us.
Output: no_flight