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. I am Cynthia Jackson. 
 agent: Hello, what can I serve you today? 
 customer: I want to attend an event in Washington. Can you book a flight ticket from IAD to IAH? 
 agent: Sure, please share your preferred travelling dates? 
 customer: I want to travel on 04/01 and 04/03. 
 agent: We found a Delta airline with fare of 100 matches your schedule. Shall I proceed with booking? 
 customer: Yes, proceed to booking. 
 agent: Your ticket has been confirmed with flight number 1027. Thank you reaching us. 
 customer: Thank you for your help.

Answer: book


Question: customer: Hi. 
 agent: Hello, how can I help you today? 
 customer: Can you please help me in changing my recent reservation? 
 agent: Sure, can I have your name please? 
 customer: Sure, my name is Sharon Parker. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Thanks for waiting, there is no active reservation on your given name. 
 customer: Ok, No issues. Thanks you. 
 agent: Thank you for opting us.

Answer: no_reservation


Question: customer: Hi,. I am Mark Clark. 
 agent: Hello, How can I serve you? 
 customer: I want to change my existing reservation so, can you help me with this? 
 agent: Sure, Please wait a second. 
 customer: Sure. 
 agent: Sorry, No reservation found on your name. 
 customer: No problem, thank you for the information. 
 agent: Thank you for availing us.

Answer:
no_reservation