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 can I assist you? 
 customer: Due to my wife is sick I need to cancel my recent reservation. Can you please help me in that? 
 agent: Sure, May I know your name? 
 customer: My name is Donna Adams. 
 agent: Ok, please give me a minute. 
 customer: Sure. 
 agent: Thank you for waiting, we did not find any reservation on your name to cancel it. 
 customer: Ok, no problem. Thanks for your information. 
 agent: Thank you for choosing us.
A:
no_reservation