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,. 
 customer: I am Shirley Phillips. 
 agent: How shall I assist you? 
 customer: I want to cancel my reservation due to heavy rainfall at my place. 
 agent: I'm sorry, no reservation found by name Shirley Phillips. 
 customer: Ok, thank you for informing me. 
 agent: Thanks. Have a nice day!.
A:
no_reservation