You will be given a definition of a task first, then some input of the task.
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. 
 agent: Hello. How may I assist you? 
 customer: I need your assistance in changing my existing reservation. 
 agent: Sure, I am glad to help you. 
 __ 
 agent: Please help me with your name. 
 customer: My name is Kenneth White. 
 agent: Please hold on a moment. 
 customer: Sure, I will wait. 
 agent: Kenneth White, I have found your reservation. Can you please provide your airport codes? 
 customer: LAS and PHX are the respective in and out airport codes. 
 agent: May I know your planned travel dates please? 
 customer: February 4 and 6 are my planned travelling dates. 
 agent: May I know your airline preference? 
 customer: I am good with any airlines that has a break in the journey. 
 agent: Please hold on a moment. 
 customer: Sure, I will wait. 
 agent: I found an economy class in United Airlines with fare 100 and it has single connection. Can I book your ticket? 
 customer: Yes, please. 
 agent: Ok, your booking is confirmed with flight number 1020. 
 customer: Great! Thank you. 
 agent: Thank you for choosing us.
Output:
customer: Thank you.