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

Q: customer: Hello. 
 agent: Hello. 
 customer: Larry Allen here. 
 agent: How may I assist you? 
 customer: I want to travel from SEA to LAX for my business trip, can you please help me out with booking of a flight ticket on those locations? 
 agent: May I know your travelling dates please? 
 customer: Sure, I am planning to move on 11/07 and please book my return ticket also on 11/09. 
 agent: Ok, please wait for a moment. 
 customer: Sure. 
 agent: Flight-1007 is available for you with 1 connection at the price of 100, can I proceed with booking? 
 customer: That's fine for me to travel, you can proceed with booking. 
 agent: Your booking is done. 
 customer: Thank you for your help in booking of my ticket. 
 agent: Thank you for choosing us. 
 customer: Welcome.

A: book
****
Q: customer: Hello. 
 agent: Hello, how may I oblige you today? 
 customer: My name is Helen Young, I want to book a flight from TX-HOU to Denver, CO-DEN to meet my sister. Can you book a connecting flight for me? 
 agent: When you are willing to travel? 
 customer: I will fly on 11/30 and return on 12/02. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: We found 1002 Southwest airlines with single connection with price 100. 
 customer: Please proceed with booking. 
 agent: Your, booking has been confirmed. 
 customer: Thank you for helping me with booking. 
 agent: Thank you for reaching us.

A: book
****
Q: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: Mary Martin here. Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. 
 agent: Sure, please wait for a while. 
 customer: Sure. 
 agent: Sorry Mary, there is no active reservation found with your name in our records. 
 customer: That's ok, no problem. 
 agent: Most welcome. 
 customer: Thank you.

A:
no_reservation
****