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: Hi. 
 agent: Hello, how may I aid you? 
 customer: Can you help me to cancel my reservation? Because I have some work on that dates. 
 agent: Sure, could you please provide your name to check your reservation status? 
 customer: My name is Robert Anderson. 
 agent: Ok, please wait a moment I will check your complete details and proceed further. 
 customer: Sure, take your time to check. 
 agent: Sorry to say, there is no reservation on your name in my database. 
 customer: No, issues. 
 agent: Thank you for reaching us, have a nice day. 
 customer: Thank you for your time.
A:
no_reservation