Instructions: 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
Input: customer: Hi, Nicole Nelson here. 
 agent: Hello. How can I help you today? 
 customer: I want to cancel my recent reservation due to my health issue, will you help me out? 
 agent: Sure, I can help you with that. Please allow me a moment to check the details for you. 
 customer: Ok. 
 agent: Your patience is greatly appreciated. Nicole, I have checked and see that there is no reservation found under your name. 
 customer: It's ok, no issues. Thank you for your information. 
 agent: You are welcome. Thank you for contacting us.
Output:
no_reservation