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: Hi. 
 agent: Hello. How may I assist you today? 
 customer: Can you help me to cancel my reservation? 
 agent: Sure, I will help you. Can you please provide your name to check your previous reservation? 
 customer: My name is Amanda Hernandez. 
 agent: Ok, please wait a moment. We regret that, there is no reservation found with your name in our records. 
 customer: Sure. Ok, no issues. Thank you for your time. 
 agent: Thank you for reaching us, have a great day.
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
no_reservation