Q: 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
customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I want to cancel my ticket due to heavy floods in my place. 
 agent: May I know your name please? 
 customer: Carolyn Phillips here. 
 agent: No reservation found in our database as per your preferences. 
 customer: No problem, thank you. 
 agent: Thank you for choosing us.
A:
no_reservation