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 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.

Output: book


Input: Consider Input: customer: Hello. 
 agent: Hello. How may I help you today? 
 customer: I need to book my ticket from CLT to OAK. Can you please help me with booking? 
 agent: Sure, I am here to help you with that. Can I know your planned trip dates? 
 customer: My planned trip dates are Sept 14 and Sept 16. 
 agent: May I know your good name? 
 customer: Sure, Kathleen Roberts. 
 agent: Is there any other requirements? 
 customer: I need a connecting flight in my journey. 
 agent: Please wait for a minute. 
 customer: Sure, I will wait for your response. 
 agent: The United airlines are providing a flight having a connection limit 1 and the ticket fare of 100. Can I proceed with the ticket booking? 
 customer: Yes, please proceed with that ticket booking. 
 agent: Your flight ticket is confirmed in an economy class and the flight number 1003. 
 customer: Thank you for helping me. 
 agent: Thank you for reaching us. Have a safe journey.

Output: book


Input: Consider Input: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I have to change my reservation due to my planned event got postponed. So please help me with that. 
 agent: May I know your name please to check the status of your reservation? 
 customer: Thank you. Please check the reservation with my name Edward Hernandez. 
 agent: Thank you. Please stay online for a while, I will check your reservation status and let you know. 
 customer: Sure, I will wait for your response. 
 agent: Sorry, there is no reservation matching with your name in our portal to make changes further. 
 customer: Oh! It may not be booked properly. Anyway, thank you for your time. 
 agent: Thank you for reaching us. 
 customer: Most welcome.
Output: no_reservation