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: Hi,. 
 agent: Hello, may I know your name please? 
 customer: I am George Lopez. 
 agent: How may I help you? 
 customer: I am planning to visit a Funfair exhibition in Houston, could you please help me in booking my flight ticket? 
 agent: Sure, please provide your travel dates? 
 customer: I want to fly on 06/30 and return on 07/02. 
 agent: Please provide your journey points? 
 customer: Source and destination is from OAK - HOU. I would request you kindly, To find a flight with price limit as 200. And connections limit as 1. 
 agent: Thank you for providing your details. Please wait for a while, I will check and revert you. 
 customer: Ok. 
 agent: Sorry there were no flights founds matching with your requirements. 
 customer: Ok, no issues. 
 agent: Thank you for reaching us. 
 customer: Thanks for the information. 
 agent: Have a good day.

Output: no_flight


Input: Consider Input: customer: Hi,. 
 agent: Hello, how can I aid you today? 
 customer: I am Andrew Hill. I want to know about ticket availability to DEN from PHX. Will you please give the information? 
 agent: Sure, we are here to help you. Can you please provide your journey dates? 
 customer: Yeah. My journey dates are 12/26 and 12/28. 
 agent: Ok, please wait a moment. I will check the availability. 
 customer: OK. 
 agent: Thanks for your time. There is a flight with airline JetBlue and airline number is 1026. Fare of ticket is 200 with one connection. Shall I proceed with this booking? 
 customer: You can proceed. 
 agent: Your ticket has been reserved. Thank you for connecting wit us. Have a safe journey.

Output: book


Input: Consider Input: customer: Hello. 
 agent: Hello. How can I help you? 
 customer: Owning to an emergency, I want to cancel my recent reservation. Can you please help me out? 
 agent: Sure, may I know your name? 
 customer: Sure, my name is Timothy Jackson. 
 agent: Sorry, there is no reservation found under your name. 
 customer: Ok, no problem. Thank you for your information. 
 agent: Thank you for opting us.
Output: no_reservation