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. 
 agent: Hello. 
 customer: I am Kathleen Parker. 
 agent: How may I help you? 
 customer: Can you please help me in cancelling my recent reservation? 
 agent: Sure, I can help you and please be on hold for a moment. 
 customer: Ok, sure. 
 agent: Thank you for waiting, there is no reservation found for the user name in our back end to cancel it. 
 customer: Ok, fine thank you for checking. 
 agent: You are most welcome and thank you for reaching us, have a nice day.
A:
no_reservation