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: Hi. 
 agent: Hello, could you please tell me for what assistance you approached us? 
 customer: Justin Martin this side, looking for a round to HOU for giving a presentation in my company's another branch. Can you help me with that? 
 agent: Sure, I am glad to help you. 
 customer: Thank you. 
 agent: May I know your preferable travelling dates? 
 customer: Sure, it's 02/05 and 02/07. 
 agent: Ok, please tell me from which location you want to travel. 
 customer: I want to travel HOU. 
 agent: Sorry, no flights found as per your request. 
 customer: Ok, not an issue. Thank you for your time. 
 agent: Thank you for choosing us. 
 customer: Welcome.

Answer: no_flight


Question: customer: Hello. 
 agent: Hello. 
 customer: I am Paul Collins. 
 agent: How can I help you out? 
 customer: Could you help me in booking a flight ticket from SFO to DFW? 
 agent: Sure, Can you please let me know your planned trip dates? 
 customer: I will start on July 26, return on July 28. 
 agent: Is there any connection limit for you? 
 customer: I want direct flight. 
 agent: Please help me with your specific depart and arrival timings. 
 customer: My return time should be morning. 
 agent: Do you have any class preference? 
 customer: No. 
 agent: Is there nay other specifications to be met? 
 customer: I want normal cost airline. 
 agent: Thanks for providing details, no flights are available on your journey routes. 
 customer: Not an issue, thank you. 
 agent: Thank you for choosing us.

Answer: no_flight


Question: customer: Hello. 
 agent: Hello, how may I aid you today? 
 customer: I need to reserve a ticket from ORD to PHX, can you help me in doing that? 
 agent: Sure, please share me your trip dates. 
 customer: My trip dates are July 26 to 28. 
 agent: Is there any class preferences for you? 
 customer: No. 
 agent: Is there any time concern for you? 
 customer: No. 
 agent: Please share me your other specifications. 
 customer: I need a connecting flight. 
 agent:  For booking, we need your good name. Please mention it. 
 customer: I am Dennis Harris. 
 agent: We found a AA airlines and 1011 is flight number with a fare of 600. Shall I proceed? 
 customer: Ok, proceed. 
 agent: Your ticket is confirmed with a business class. 
 customer: Thank you. 
 agent: Thank you for opting us.

Answer:
book