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 Betty Campbell. 
 agent:  Hello, How exactly I can serve you the best today? 
 customer: Can you help me to book a direct flight from LGA - OAK? 
 agent: Sure, I will help you with that. 
 customer: Thanks. 
 agent: Kindly, mention your travelling dates? 
 customer: My travelling dates are 07/26 and 07/28. 
 agent:  Ok, please wait a moment, let me search a flight for you. 
 customer: Sure. 
 agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: Ok, no issues. Thank you. 
 agent: Thank you for choosing us.
Example Output: no_flight

Example Input: customer: Hello. 
 agent: Hello. How may I guide you today? 
 customer: I am Ruth Gonzalez here. I want to change my previous  travelling dates. Can you please help me out in changing my existing  reservation? 
 agent: Sure, I will help you with that. 
 customer: Thank you for considering my request. 
 agent: Please wait for a minute. 
 customer: Sure, I will wait for your response. 
 agent: I am sorry to say that there is no reservation found under your name. 
 customer: Not a problem, anyway, thank you for the information. 
 agent: Thank you for reaching us, have a great day.
Example Output: no_reservation

Example Input: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I have planned a trip with my students to enjoy the holidays in water world but, some of the students were effected with health issues, so I would like to change my booking, help me with that? 
 agent: Sure, I will help you with that. May I know your name for further process? 
 customer: Thanks. Sure, my name is Samuel Young. 
 agent: I am sorry to say no reservation found on your name. 
 customer: Oh! It's ok no problem. Thank you for your information. 
 agent: Thank you for choosing our service.
Example Output:
no_reservation