Detailed 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
Q: customer: Hi, I am Scott Davis. 
 agent: Hello, how may I assist you today? 
 customer: I want to cancel my reservation, can you help me with that? 
 agent: Sure, we are here to help you. 
 customer: Thank you. 
 agent: Please wait for a while. 
 customer: Sure. 
 agent: Sorry we could not find any reservation with your name. 
 customer: Ok, no issues. Thank you. 
 agent: Thank you for choosing us.
A:
no_reservation