Detailed Instructions: 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 may I help you at this moment? 
 customer: Please cancel my recent reservation. 
 agent: Ok, can I have your full name to check your reservation? 
 customer: My name is Scott Lewis. 
 agent: Ok, please wait a minute. 
 customer: Ok. 
 agent: Sorry to inform you, there is no reservation found with your name in the ticket confirmation chart list. 
 customer: It's ok, thank you. 
 agent: You are welcome.
A:
no_reservation