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: Hi. 
 agent: Hello, how can I help you today? 
 customer: Can you please book a flight ticket from JFK to PHX? 
 agent: Sure, let me know your trip dates? 
 customer: I want to travel in Aug from 19th to 21st. 
 agent: May I know your connection limit? 
 customer: I want a connecting flight. 
 agent: Do you have any other requirements? 
 customer: No. 
 agent: Can I know your name? 
 customer: Donna Garcia here. 
 agent: Thanks for your details, there is no flight found on your journey routes. 
 customer: That's ok, thank you for checking. 
 agent: Thank you for availing us.

Output: no_flight


Input: Consider Input: customer: Hello. 
 agent: Hello, how can I help you today? 
 customer: Myself Janet Perez. Due to some problems I am unable to travel in flight so can you please cancel my flight ticket? 
 agent: Sure, we are here to help you. Wait for some time. 
 customer: Ok, thank you for your positive response. 
 agent: Thanks for waiting there is no reservation found on your name. 
 customer: Oh! It's ok no problem. Thank you for your information. 
 agent: Thanks for approaching us.

Output: no_reservation


Input: Consider Input: customer: Hello. I am Mark Young. 
 agent: Hello, How can I serve you? 
 customer: I want to cancel my reservation, so please help me in the cancellation. 
 agent: Sure, Please wait a second. 
 customer: Ok. 
 agent: Sorry, No reservation found on your name. 
 customer: Not an issue. Thank you. 
 agent: Thank you for availing us.
Output: no_reservation