Detailed Instructions: 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.
Q: customer: Hi, I am Samuel Parker. 
 agent: Hello, How can I help you today? 
 customer: Please help me with booking a flight ticket from DCA to SEA. 
 agent: Sure, we are happy to help you. 
 customer: Thank you. 
 agent: May I know when you want to travel? 
 customer: My travel dates are 02/28 and 03/01. 
 agent: Ok, do you need any halt in between your journey? 
 customer: I need a halt in between the journey. 
 agent: Ok, let me check best flight for you. 
 __ 
 agent: Sorry to inform you that no flights are available on respective dates of travel. 
 customer: Ok, no issues. Thanks for the help. 
 agent: Thank you for your presence. We hope to serve you again.
A:
customer: Ok.