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: Hello. 
 agent: Hello. How may I assist you today? 
 customer: Ashley Thomas here. I want to cancel my recent reservation. Can you help me for this one? 
 agent: Sure, we are here to help you. Sorry to inform you that there is no active reservation found on your given name. 
 customer: No issues, thank you for your information. 
 agent: Thanks for reaching us, have a nice day.
A:
no_reservation