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 guide you today? 
 customer: I want to cancel my recent reservation, can you please help me out? 
 agent: Sure, can you provide your good name please? 
 customer: Sure, my name is Jacob Robinson. 
 agent: Please wait a minute. 
 customer: Ok, take your time. 
 agent: Sorry to say that, there is no active reservation found on your name. 
 customer: It's ok, thank you for the information. 
 agent: Thank you for reaching us.
Student:
no_reservation