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 today? 
 customer: I am Dorothy Turner, I am going to Washington DC to take tour of White house with my family. Help me to find a flight of price 1000. 
 agent: Could you please provide me airport codes? 
 customer: I will fly from NC-CLT to DC-IAD. Please find a flight with single connection. 
 agent: Sure. To check with availability of flights, I need your travel dates. 
 customer: My travel dates are for depart is 06/29 and returning on 07/01. 
 agent: Please be online, I will revert you with flight details. 
 customer: Ok. 
 agent: Thanks for your time, Delta airline is available with flight number 1015. Can I process the booking? 
 customer: Yes. 
 agent: Ok, Your ticked is confirmed.Thanks for reaching us. 
 customer: Thanks for your service.

Answer: book


Question: customer: Hello,. 
 agent: Hello, how can I help you? 
 customer: I already have an reservation to attend a meeting, due to some problems my meeting place has been changed. So I need a few changes in my reservation. 
 agent: Sure, please share me your name? 
 customer: Can you please help me in changing my reservation? My name is Stephanie Smith. 
 agent: OK, please wait a minute. 
 customer: Ok. 
 agent: There is no reservation with your name. 
 customer: No problem, thank you. 
 agent: Thank you.

Answer: no_reservation


Question: customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: I want to travel from OAK to PHL. Can you help me to book a flight ticket? 
 agent: Sure, I am here to help you out. May I know your travel dates please? 
 customer: I want to travel in the flight on Oct 01 and Oct 03. 
 agent: Can you please share your name? 
 customer: Christine Thompson. 
 agent: Do you have any other specifications? 
 customer: I want to have a connection of 1. 
 agent: Hawaiian airline sis providing connecting flight for you with the fare f 200 in economy class, shall I proceed with the booking? 
 customer: Proceed to booking. 
 agent: Your ticket is booked with the flight-1022. 
 customer: Thank you for your help. 
 agent: Thank you for choosing us.

Answer:
book