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

customer: Hello. 
 agent: Hello, how may I aid you? 
 customer: Myself Daniel Brown. I would like to attend seminar, so can you help me booking flight from MSP to SFO? 
 agent: can I know your travel dates? 
 customer: My travel starts from 05/05 to 05/07. Provide flight with connection 1. 
 agent: Basing on your details, I got a flight with flight number 1005 with price 100 and connection limit 1. Can I proceed? 
 customer: Ok, proceed to booking. 
 agent: Your booking is done. 
 customer: Thank you for your services. 
 agent: Most welcome.
book

customer: Hello. 
 agent: Hello. How may I help you? 
 customer: Katherine Perez here. Owing an emergency, I want to cancel my recent reservation. Can you please help me? 
 agent: Sure, I will help you in cancelling your ticket. Ok, please wait a moment. 
 customer: Ok, take your time. 
 agent: Thank you for waiting. 
 customer: My pleasure. 
 agent: Sorry, there are no reservations found on this name. Thank you for choosing our services. 
 customer: Thank you for your information.
no_reservation

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.
no_flight