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 can I aid you? 
 customer: Can you please help me with changing my reservation due to some changes in the trip plan? 
 agent: Sure, we are here to help you. 
 customer: Thank you. 
 agent: Can I have your name to check your details in our reservation list? 
 customer: My name is Nicholas Hall. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: Nicholas Hall, we didn't found any reservation found on your name. 
 customer: Not an Issue, thank you for checking it for me. 
 agent: Thank you for contacting us.

Ex Output:
no_reservation


Ex Input:
customer: Hello. 
 agent: Hello. 
 customer: I am Angela Baker. 
 agent: How may I aid you today? 
 customer: Can you find a flight from HOU to SEA, to visit the Chihuly Garden and Glass. 
 agent: Sure, I am here to help you out. Please provide me your trip dates. 
 customer: Help me with booking ticket from 08/20 and 08/22. 
 agent: Sure  Angela Baker, there is a flight with 1 stop and price is 100 in economy class, can I proceed with it? 
 customer: Yes, please. 
 agent: Your ticket has need with 1014 flight in Delta airlines. 
 customer: Thanks for your help. 
 agent: Thank you for reaching us.

Ex Output:
book


Ex Input:
customer: Hi. 
 agent: Hello, how can I assist you for the day? 
 customer: Can you please cancel my reservation due to sudden demise of my grand father? 
 agent: Sure, I am here to help you. 
 customer: Thank you. 
 agent: May, I know your good name? 
 customer: I am Pamela Hernandez. 
 agent: Sorry, we found no reservation on your given name. 
 customer: It's ok, thank you for checking. 
 agent: Thank you for reaching us.

Ex Output:
no_reservation