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 can I assist you today? 
 customer: I want to attend a press conference in the capital city of United States, DC- DCA>. 
 agent: Sure, Can you please provide your source and travelling dates? 
 customer: My depart date is 08/08 and return date is 08/10 and I want to fly from Minneapolis, MN- MSP. 
 agent: Ok, please wait for a while. 
 customer: Ok. 
 agent: Thank you for waiting, No flights were found with your given details. 
 customer: Its ok, Thank you for the information. 
 agent: May I know your name? 
 customer: I am Christine Adams. 
 agent: Ok, Thank you for choosing us.
A:
no_flight