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. 
 customer: I am Brenda Gonzalez. 
 agent: How may I assist you at this moment? 
 customer: Owing to an emergency, I want to cancel my recent reservation. Can you help me out? 
 agent: Sure, I am glad to help you with that. Please be on hold to check your previous reservation. 
 customer: Ok, take your time. 
 agent: As per your request, I have successfully cancelled your reservation. 
 customer: Thank you for your help. 
 agent: Thank you for approaching us, have a great day.

Answer: cancel


Question: customer: Hello. 
 agent: Hello, how can I aid you today? 
 customer: Can you please help me to book a flight from BOS to SFO? 
 agent: Please provide your trip dates. 
 customer: Sure, I want to travel on Apr 13 and need to return on Apr 15. 
 agent: Do you need any connection limit? 
 customer: I need a flight with single connection. 
 agent: Is there any other specifications? 
 customer: My depart time must be in the evening. 
 agent: May I know your name? 
 customer: I am Virginia Parker. 
 agent: There are no flights available on your routes. 
 customer: Ok, not an issue. Thank you for checking. 
 agent: Thank you for choosing us.

Answer: no_flight


Question: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I am Stephen Mitchell. As my father's health condition is serious, I want to cancel my resent reservation. 
 agent: Ok, please give me a minute. 
 customer: Sure. 
 agent: Thanks for giving your time. There was no reservation found on your name. 
 customer: Its ok, thank you for your information. 
 agent: Thanks for opting us.

Answer:
no_reservation