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 can I help you? 
 customer: As I have fallen sick suddenly due to bad weather, I would like to cancel my recent reservation. 
 agent: On which name can I cancel your reservation? 
 customer: Kathleen Parker here. 
 agent: I am sorry no reservation found on your name. 
 customer: That's ok, thank you for your help. 
 agent: Thank you for choosing us.
Student:
no_reservation