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, I am Lisa Rodriguez. 
 agent: Hello Lisa Rodriguez, how can I support you? 
 customer: Due to heavy rain, I want to cancel my reservation. Can you help me? 
 agent: Sure, we will help you. Please wait for a minute. 
 customer: Sure. 
 agent: Thanks for your time, no reservation was found based on your name. 
 customer: No issue, Thank you. 
 agent: Thanks for opting our service.
Student:
no_reservation