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

Example Input: customer: Hi. 
 agent: Hello, how can I help you? 
 customer: Myself Laura Perez. My kids were bored with their daily schedule, so I want to make their mind refresh. I have decided to take a tour to Washington. Can you please book me a flight ticket on 07/31 along with a return ticket on 08/02? 
 agent: Sure, we are here to help you. Can you share me your journey locations? 
 customer: Thank you. Sure, I will start from LAX and land at IAD. 
 agent: Ok, wait for some time. 
 customer: Ok. 
 agent: We found UA airline with connecting flight and number 1003 fare of 100. Shall I proceed for booking? 
 customer: That's perfect, please proceed. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for your assistance. 
 agent: Thanks for choosing us.
Example Output: book

Example Input: customer: Hello. 
 agent: Hello, how can I help you today? 
 customer: I planned to meet my friend in PHL, can you please help me to book a flight ticket from LAX? 
 agent: Sure, I am here to help you in booking. Can you please share your travel dates? 
 customer: I prefer to travel on Apr 21 and Apr 23. 
 agent: Ok, please share your name. 
 customer: I am Barbara Carter. 
 agent: Let me know your connection limit? 
 customer: I prefer to travel in a connecting flight. 
 agent: Do you have any specification? 
 customer: I would like to depart in afternoon. 
 agent: Here, I found a flight for you with 1 stopover in economy class and it costs you 200. Can I proceed? 
 customer: Ok, please confirm my booking. 
 agent: Your booking is done with flight 1018 in Spirit airlines. 
 customer: Thank you for your help. 
 agent: Thank you for reaching us, have a safe flight.
Example Output: book

Example Input: customer: Hello. 
 agent: Hello, how best can I aid you today? 
 customer: Can you please change my reservation, due to change of my trip plan to another location? 
 agent: Sure, please share your good name? 
 customer: My name is Robert Gonzalez. 
 agent: Please stand by. 
 customer: Sure. 
 agent: Thank you for waiting, there is no active reservation found with the given name. 
 customer: Ok, no issue. Thank you. 
 agent: Thank you for contacting us.
Example Output:
no_reservation