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: Hello, I am Rachel Wright. 
 agent: Hello, how can I be your helping hand? 
 customer: I want to change my existing reservation due to some health issues, can you please help me with that? 
 agent: Sure, I am here to help you. Please wait for a while, I will check your reservation. 
 customer: Sure. 
 agent: Thank you for being patience, there is no reservation found on your name. 
 customer: Ok, not an issue. Thank you for your information. 
 agent: Thank you for approaching us.
Example Output: no_reservation

Example Input: customer: Hello. 
 agent: Hello, how can I help you? 
 customer: For a holiday vacation I want to go to MSP on 08/09. Aid me in booking a ticket with the name of Samantha Perez. 
 agent: Sure, I am here to help you. May I know your return date? 
 customer: On 08/11, I have to return. 
 agent: Could you please share your source code? 
 customer: Phoenix, PHX is my source point. 
 agent: Do you need any halt in between your journey? 
 customer: Yes, connection is to be 1. 
 agent: Thanks for your details, there is no flight found to reach your destination. 
 customer: Fine, I will go with another flight. Thank you for your service. 
 agent: Thank you for reaching us.
Example Output: no_flight

Example Input: customer: Hi. 
 agent: Hello, how can I aid you for today? 
 customer: Owing to an emergency I want to cancel my reservation, can you help me? 
 agent: I am here to help you about that, can you please provide your name for checking the reservation status under your name? 
 customer: I am Jeffrey Hill. 
 agent: Please wait for 2-3 minutes while I check with the active reservation under your name. 
 customer: Sure. 
 agent: Sorry Jeffery Hill, there is no active reservation under your name in our booking list. 
 customer: No problem, thanks for checking. 
 agent: You are welcome, thank you for reaching us.
Example Output:
no_reservation