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. How can I assist you? 
 customer: Due to some issues, I am willing to change my existing reservation. Can you please help me for this? 
 agent: Sure, can I know your name please? 
 customer: I am Rebecca Lee. 
 agent: Ok, wait a moment please. 
 customer: Sure. 
 agent: Sorry, there is no reservation found on your name. 
 customer: Oh! It may not be booked properly due to some technical issues while booking. Thank you for checking. 
 agent: Thank you for approaching us.

Output: no_reservation


Input: Consider Input: customer: Hello. My name is Ryan Perez. 
 agent: Hello, how may I help you? 
 customer: I would like to travel from ORD to LAX, could you help me out? 
 agent: Sure, please share your travel dates. 
 customer: My preferable dates are from 09/14 to 09/16. 
 agent: I found a flight 1000 of AA airlines matches with your preferences, can I proceed? 
 customer: Please proceed with the booking. 
 agent: Your ticket is booked. 
 customer: Thank you, have a good day. 
 agent: Thank you for reaching us.

Output: book


Input: Consider Input: customer: Hi. 
 agent: Hello, what can I do for you today? 
 customer:  I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you please help me in changing my reservation? 
 agent: Sure, let me know your name to check for your reservation status? 
 customer: Cynthia Harris here. 
 agent: Please stand by. 
 customer: Ok. 
 agent: Sorry, no reservation found on your name in our portal to change it. 
 customer: No issue, Thank you for the information. 
 agent: Thank you for contacting us.
Output: no_reservation