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: Hi. How can I help you? 
 customer: Myself Stephen Parker. I want to travel from DEN to JFK, can you please book a flight ticket for me? 
 agent: Sure, may I know your date please? 
 customer: I want to travel from 06/10 to 06/12 dates. 
 agent: Hawaiian airlines is matching you with 1029 flight number, can I proceed for booking? 
 customer: Sure, please proceed it. 
 agent: Your booking is confirmed. 
 customer: Thank you so much. 
 agent: Thank you, have a safe journey.

Answer: book


Question: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I am George Hall, want to travel from IAH to SFO>. 
 agent: May I know your trip dates? 
 customer: My travel dates are from 06/05 to 06/07. Please check the flight with 1 connection. 
 agent: There is no reservation found under your name. 
 customer: It's ok, thank you. 
 agent: Most welcome.

Answer: no_flight


Question: customer: Hi. 
 agent: Hello. How can I aid you? 
 customer: I want to book a ticket from AUS to HOU, will you help me? 
 agent: Sure I will help you. Can you share your journey dates? 
 customer: I am planning to go 08/10 and 08/12. 
 agent: May I know your name? 
 customer: Sure, Deborah Phillips here. 
 agent: Sorry, there is no flight found. 
 customer: It's ok, not an issue. Thank you. 
 agent: Thank you.

Answer:
no_flight