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: Consider Input: customer: Hello. 
 agent: Hello. How can I assist you today? 
 customer: My name is Janet Rodriguez. I have a plan to meet my friend in Seattle, can you help me for booking a flight ticket? 
 agent: Sure, I will help you in booking. Can you please help me with your travel dates? 
 customer: My travelling dates are from 03/30 till 04/01. 
 agent: Ok, may I know your airport codes? 
 customer: My travelling airport codes are from MCO to SEA. 
 agent: Here, I found a flight for you with 1 connection and fare is 100. Shall I proceed? 
 customer: Ok, please proceed for booking. 
 agent: Your booking is done with flight 1015 and airline is Spirit. 
 customer: Thank you for booking. 
 agent: Welcome, have a safe flight.

Output: book


Input: Consider Input: customer: Hi, Patrick Smith here. 
 agent: Hello. How can I help you? 
 customer: We friends were planning to go for Nutshell Bike Tour to Austin, TX-AUS on 08/16. Can you hold me a ticket with single connecting flight? 
 agent: Sure, may I know source code and return journey date please? 
 customer: Sure, I will be back on 08/18 at Orlando, FL-MCO. 
 agent: There is a flight with single connection, can I proceed for booking in 1004 flight? 
 customer: Ok, please proceed. 
 agent: Your booking is done in UA airlines, have a safe journey. 
 customer: Thank you. 
 agent: Thank you for choosing us.

Output: book


Input: Consider Input: customer: Hi. 
 agent: Hello. How can I assist you? 
 customer: My cousin told me to cancel his reservation because he is unwell. Can you please help me out? 
 agent: Sure, I will help you with this. 
 customer: Thank you. 
 agent: Can you please provide the name on which you have made the reservation previously? 
 customer: The reservation was done on the name of Ronald Harris. 
 agent: Ronald Harris, there is no active reservation found under your name in our database. 
 customer: Not an issue, thank you so much for checking. 
 agent: Thank you for contacting us.
Output: no_reservation