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

Let me give you an example: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
The answer to this example can be: no_reservation
Here is why: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation

OK. solve this:
customer: Hello. 
 agent: Hello, how can I help you? 
 customer: Will you please book me a flight ticket from SFO to PHX? 
 agent: Can you please provide me with the planned journey dates? 
 customer: I am planning to start on June 4th and return on June 6th. 
 agent: May I know if you have any airline preference? 
 customer: I am fine with any airline. 
 agent: Is there any time concern? 
 customer: No, I don't have any time restriction. 
 agent: Would you like to travel by direct or connecting flight? 
 customer: I am looking for a connecting flight only. 
 agent: Are there any more preferences that you want to avail? 
 customer: No. 
 agent: Can you provide me your name please? 
 customer: I am Donna Nelson. 
 agent: Give me a moment. 
 customer: Sure. 
 agent: Donna Nelson. Hawaiian Airlines with flight 1014 is providing service on your route with connecting flight and the cost is 100. 
 customer: Fine, please proceed. 
 agent: Your ticket is booked where depart SFO 14:00 hours June 04 and arrival PHX 7:00 hours June 06. 
 customer: Thanks for your support.
Answer:
book