Part 1. Definition
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
Part 2. Example
customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
Answer: no_reservation
Explanation: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation
Part 3. Exercise
customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I want to change my destination airport code in my existing reservation, can you please help me out? 
 agent: Sure, I am here to help you for this. May I know your name please? 
 customer: Sure, my name is Nicholas White. 
 agent: Just a moment, let me check your reservation status in our database. 
 customer: Ok, take your time. 
 agent: Sorry for inconvenience, no reservation is found under your name. 
 customer: It's ok, thank you for the information. 
 agent: Thank you very much for contacting our agency.
Answer:
no_reservation