Teacher: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
Teacher: Now, understand the problem? Solve this instance: customer: Hello. 
 agent: Hello, how may I serve you today? 
 customer: I am Virginia Wilson is my name. I just want to cancel my recent reservation, due to my exams has been cancelled. Can you help me with that? 
 agent: Sure, I am happy to help you. Please wait for a while, I will check and get back to you. 
 customer: Sure. 
 agent: There is no reservation found on your given name. 
 customer: That's Ok, thanks for your help. 
 agent: Thanks for choosing us.
Student:
no_reservation