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

Example Input: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I am Matthew Allen, want to travel from EWR to HOU. Will you please help me in booking my ticket? 
 agent: Sure, can you provide your travel dates? 
 customer: My travelling dates will be from 04/17 to 04/19. 
 agent: Please wait. 
 customer: Sure. 
 agent: Thank you for your patience, there is a flight for you with number 1027 in JetBlue airline. Shall I proceed? 
 customer: Great, please proceed with the booking. 
 agent: Sure, your ticket has been booked. 
 customer: Thank you for your service. 
 agent: Thank you for reaching us.
Example Output: book

Example Input: customer: Hi. 
 agent: Hello,how can I support you today? 
 customer: I am Brandon Rodriguez. I want to watch live ice sating at New York, NY - JFK. Can you help me in my booking? 
 agent: Sure, we are here to help you for booking. 
 customer: Thank you. 
 agent: Let me know your source point. 
 customer: My origin is LAS. 
 agent: Ok, please share your journey dates. 
 customer: My journey dates are from 10/31 to 11/02. 
 agent: Ok, please wait for a moment. 
 customer: Sure. 
 agent: Unfortunately, there were no flights are running at that location due to abnormal weather conditions. 
 customer: Not an issue. Thank you. 
 agent: Thank you for availing our agency.
Example Output: no_flight

Example Input: customer: Hi. 
 agent: Hello, How can I assist you? 
 customer: Can you cancel my recent reservation? 
 agent: Sure, May I know your name? 
 customer: Sure, I am Amy Taylor. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: We have found a reservation on your name, Shall I cancel it? 
 customer: Proceed. 
 agent: Your ticket has been cancelled. 
 customer: Thank you. 
 agent: Thank you for opting us.
Example Output:
cancel