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 best assist you now? 
 customer: Can you please avail me a flight ticket from BOS to PHL? 
 agent: Kindly mention your travelling dates? 
 customer: My trip dates are Jan 5 - Jan 7. 
 agent: Do you need any break in between journey? 
 customer: I need a single connection. 
 agent: May I know your name? 
 customer: Lisa Smith here. 
 agent: Is there any another specifications on your trip? 
 customer: No. 
 agent: Thanks for sharing your details, we are unable to provide flight in between your journey routes. 
 customer: No issues, thank you. 
 agent: Thanks for reaching us.

Answer: no_flight


Question: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: Can you please reserve me a flight ticket from IAD to DTW? 
 agent: Are you fine with connecting flight? 
 customer: Yes, I am ok with connecting flight. 
 agent: Sure, can you please specify me your dates of travel? 
 customer: Sure, my travel dates are from May 16 to May 18. 
 agent: May I know your specifications? 
 customer: No more specifications. 
 agent: Let me know your name? 
 customer: Myself Ruth Nelson. 
 agent: Sorry to say, no flight is available for you. 
 customer: That's ok, no problem. Thank you for the information. 
 agent: Thank you for reaching us.

Answer: no_flight


Question: customer: Hi. 
 agent: Hello, how may I aid you? 
 customer: I am Steven Nelson want to attend a workshop at Denver, can you book a ticket from EWR to DEN? 
 agent: Sure, please tell me your preferable travelling dates. 
 customer: Sure, my travelling dates will be 09/24 and 09/26. 
 agent: The AA airline with flight number 1002 is available having price as 100 and connection as 1. 
 customer: Ok, proceed with my booking. 
 agent: Ok, your reservation is confirmed. 
 customer: Thank you. 
 agent: Thank you for choosing us, have a safe journey.

Answer:
book