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
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Question: customer: Hello. 
 agent: Hello, how can I help you today? 
 customer: Emily Anderson here. I would like to travel from EWR to meet my brother who was staying in BOS, can you help me to find a flight? 
 agent: Sure, we are here to help you. Can you share me your travelling dates? 
 customer: Thank you. My travelling dates are Nov, 22 and Nov, 24. 
 agent: Do you need any halt in between your journey? 
 customer: Yes, I need a halt between journey. 
 agent: Ok, wait for some time I will check and get back to you. 
 customer: Sure. 
 agent: Thanks for waiting there are no flights found on your details. 
 customer: That's fine, thanks for your information. 
 agent: Thanks for approaching us.

Answer: no_flight


Question: 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.

Answer: no_reservation


Question: customer: Hi. 
 agent: Hello. How can I provide assistance to you? 
 customer: I would like to change my reservation as I cannot go on that trip due to personal reasons, can you please help me with that? 
 agent: Can I know your name? 
 customer: Mary Thompson here. 
 agent: Give me a minute. 
 customer: Sure, take your time. 
 agent: Sorry, we couldn't find a reservation on your name to change. 
 customer: That's ok, thank you for checking. 
 agent: Thank you for choosing us.

Answer:
no_reservation