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: Hello. 
 agent: Hello. How may I help you? 
 customer: Can you help me to cancel my reservation? 
 agent: Sure, can I know your name please? 
 customer: Myself Cynthia Taylor. 
 agent: I am sorry Taylor, I didn't find any reservation regarding your details. 
 customer: Oh! that is fine. Thank you for your quick response. 
 agent: Your welcome.
A:
no_reservation