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. 
 customer: I am Matthew Young. 
 agent: What can I do for you? 
 customer: I want to cancel my recent reservation, because I want to travel  with my friends by road. Can you help me? 
 agent: Sure Matthew Young, please hold on. 
 customer: Ok. 
 agent: Sorry to inform you that, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: That's Ok, thanks for your response. 
 agent: Thank you for reaching us, have a nice day.
Student:
no_reservation