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 Gregory Lopez. 
 agent: Hello, how may I be there at your service? 
 customer: Can you please help me to cancel my recent reservation? 
 agent: Sure, let me check the reservation list and revert you. 
 customer: Sure. 
 agent: We did not find any reservation by the name you provided. 
 customer: That's ok, not a problem. Thanks for your information. 
 agent: Thank you for consulting us.
Student:
no_reservation