In this task, you're given a dialogue between a customer and a flight booking agent with a gap in the conversation. Your job is to find the answer of the previous dialogue. Avoid using irrelevant extra information while creating the answer. The answer should be relevant to the question before the blank. If you fill the blank with a question, it should have an answer from the agent in the given dialogue. Fill the gap marked with underline.

customer: Hello. I am Patrick Walker. 
 agent: Hello. What can I do for you? 
 customer: I planned to visit Empire state building in JFK.Can you book a flight ticket on 05/24? 
 agent: Sure, may I know your source code? 
 __ 
 agent: Ok, wait a moment. 
 customer: Sure. 
 agent: Thank you for your patience, there is a flight with number 1015 in Spirit airline. Can I proceed? 
 customer: Please make sure that the connection is 1. 
 agent: Yes, the connection limit is 1. 
 customer: Ok, please proceed to book the ticket. 
 agent: Ok, your ticket has been booked. 
 customer: Thank you for the help. 
 agent: Thank you for approaching us.Have a nice day.
customer: My origin airport code is LAS and I would like to return on 05/26.