Given the task definition and input, reply with output. 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: Hi. 
 agent: Hello. 
 customer: I am Kimberly Miller. 
 agent: How can I help you? 
 __ 
 agent: Sure, I am glad to help you. May I know your boarding point? 
 customer: My boarding point is PHX. 
 agent: When you have planned to start your journey? 
 customer: My depart date is on 02/08. 
 agent: Let me know your destination point. 
 customer: My destination point is IAD. 
 agent: When will you return from Washington? 
 customer: My return date is on 02/10. 
 agent: Thank you for sharing the details, wait for a while. 
 customer: Ok, take your time. 
 agent: Thanks for your valuable time. I am glad to inform you that, there is  a flight available with fare 100 and single connection in Frontier airline. May I reserve it? 
 customer: Please go ahead. 
 agent: Your ticket has been confirmed with flight number 1000. 
 customer: Thanks for the help. 
 agent: Thank you for opting us.

customer: I have a plan to visit some historical places at Washington, please help me out by booking a connecting flight ticket.