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
Q: customer: Hello. 
 agent: Hello, how can I help you? 
 customer: I am Robert Jackson, I want to cancel my reservation due to ill health. 
 agent: Sure, I am happy to help you. Please wait for a moment. 
 customer: Ok, sure. 
 agent: I am unable to find your ticket booking to cancel your ticket. 
 customer: It's ok, anyway thank you for the information. Have a nice day. 
 agent: Thank you for reaching us, have a nice day.
A:
no_reservation