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. How can I assist you today? 
 customer: I booked a flight ticket in your agency for my holiday trip to Houston but now I want a change in the travel dates. So can you go ahead and change my flight ticket? 
 agent: Sure, may I know your name to check for the previous reservation? 
 customer: I am Timothy Mitchell. 
 agent: Please allow me a moment. 
 customer: Sure. 
 agent: Timothy Mitchell, there is no reservation found under your name. 
 customer: Ok, not a problem. Thanks for your information. 
 agent: Thank you for contacting us.

Answer: no_reservation


Question: customer: Hi, I am Jacob Robinson. 
 agent: Hello, How can I assist you? 
 customer: I would like to enjoy sky view observatory in Settle on 10/30. Can you make a return ticket reservation on 11/01? 
 agent: Sure, Please help me with your journey codes. 
 customer: Sure, I am heading towards Seattle SEA from MSP. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Sorry, No flights found with your preferable dates. 
 customer: Ok, not an issue. Thank you for your assistance. 
 agent: Thank you for reaching us.

Answer: no_flight


Question: customer: Hi. 
 agent: Hello, how may I help you today? 
 customer: I am Stephen Harris from Washington. I want to see the West Coast's tallest building named Smith Tower at Seattle, can you please avail me a flight ticket? 
 agent: Sure, on which dates would you like me to book a flight ticket for you? 
 customer: My travel dates are from 06/05 to 06/07. 
 agent: Can you please provide your source and destination airport codes? 
 customer: I would like to start from DCA to reach SEA. 
 agent: Do you need a halt in between your journey? 
 customer: I need a halt in between my journey. 
 agent: May I know your budget limit? 
 customer: My budget limit is 200. 
 agent: Ok, please wait for couple of minutes. 
 customer: Ok. 
 agent: Sorry, we found a direct flight available on your route. 
 customer: Ok, no problem. Thank you. 
 agent: Thank you for reaching us.

Answer:
no_flight