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
Input: customer: Hello, I am Kathleen Collins. 
 agent: Hi, Kathleen Collins. How may I helpful to you? 
 customer: I am planning to surprise my friend on his birthday.So, I want to travel from  MN- MSP on 03/23 to NY - LGA on 03/25. 
 agent: Sure, wait a minute,I will let you know. 
 customer: Sure. 
 agent: We have found a flight ticket matching your requirement. 
 customer: Ok, May I know the flight details? 
 agent: Flight number 1001 having one connection with price 200. Airline name is Frontier. Do you want me to proceed? 
 customer: OK, You can proceed with booking. 
 agent: Sure. Your reservation has been conformed. Thank you for contacting us. 
 customer: Ok, Thanks for your response. 
 agent: Have a safe journey.
Output:
book