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. How can I help you? 
 customer: I want to celebrate my mother birthday, I would like to book a ticket. 
 agent: May I know the journey details? 
 customer: My source airport code is EWR and my destination airport code is LGA. 
 agent: Help me with the dates. 
 customer: My prefer dates are from 07/24 to 07/26. 
 agent: May I know the name? 
 customer: My name is Amanda Scott. 
 agent: Sorry, no flight found. 
 customer: Ok, no issue. 
 agent: Thank you. 
 customer: Thank you for your information.

Answer: no_flight


Question: customer: Hi,. 
 agent: Hello. 
 customer: My name is Elizabeth Wilson. 
 agent: How may I assist you? 
 customer: Can you please book a flight ticket with in the range of 200 from Seattle? 
 agent: Sure, may I know on which dates you would like to travel? 
 customer: Sure, 09/12 - 09/14 are my travelling dates. 
 agent: Help me with the airport codes? 
 customer: My source code is WA - SEA and destination code is Houston, TX - IAH. 
 agent: Sorry, we do not found any flights running in your given details. 
 customer: Ok, not a problem. Thank you. 
 agent: Thank you for reaching us.

Answer: no_flight


Question: customer: Hi. 
 agent: Hello, how may I assist you? 
 customer: I want to change my existing reservation under the name of Michelle Brown. Can you help me out in this? 
 agent: Sure, please wait a moment. 
 customer: Ok. 
 agent: There is no reservation on your name. 
 customer: It's ok, not an issue. Thank you for your response. 
 agent: Thank you so much for choosing us.

Answer:
no_reservation