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. 
 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.

Output: book


Input: Consider Input: customer: Hi. I am Samuel Baker. 
 agent: Hello, how may I assist you today? 
 customer: I want to change my reservation owing an emergency. 
 agent: Sure, we are glad to serve you. Please wait for a while, let me check your reservation with us. 
 customer: Ok. 
 agent: Thanks for your time, unfortunately no reservation found with your name. 
 customer: Ok, thank you for your service. 
 agent: Thank you for availing us, have a great day ahead.

Output: no_reservation


Input: Consider Input: customer: Hi, Dennis Garcia is my name. 
 agent: Hello, how can I support you? 
 customer: I would like to book a flight ticket to PA - PHL to meet my best friend on her birthday. 
 agent: Sure, can you please provide your scheduled dates? 
 customer: Ok, my scheduled dates are 04/21 to 04/23. 
 agent: Ok, Kindly mention your source point. 
 customer: My source is Chicago, IL - ORD. 
 agent: Ok, May I know your budget? 
 customer: My budget is 5000. 
 agent: Ok, please give me a minute. 
 customer: Sure. 
 agent: Thank you for waiting, There is a flight found in 1012 Spirit plane with a fare of 100. 
 customer: Ok, you can move further. 
 agent: Sure, your ticket has been booked with a connection. 
 customer: Thank you so much. 
 agent: Thank you for approaching us.
Output: book